<iframe src="https://www.googletagmanager.com/ns.html?id=GTM-W3R8R6G&gtm_auth=AU1ugrxhJK_EQcp9wg5qxA&gtm_preview=env-1&gtm_cookies_win=x" height="0" width="0" style="display:none;visibility:hidden"></iframe>

56 lighthearted theme designs graphics for t-shirt and print on demand merch

Download lighthearted theme t-shirt designs and other merch graphics like book covers, phone cases, tote bags and more.

Sort by

Most relevant
A charming line-drawn Christmas tree topped with a cowboy hat conveys a unique and playful holiday spirit. The text Oh Christmas Tree adds festive cheer to this whimsical artwor
Charming fairy illustration with vibrant colors, featuring blue wings and a green dress. Playful pose and joyful expression enhance the magical theme
A cheerful cartoon man with raised arms, expressing joy and celebration. Perfect for themes of happiness and positivity
Colorful Typography Design Spelling Grin Christmas Festive Seasonal Celebration Holiday Season
Colorful striped party hat ready for celebration during a festive event
Adorable kawaii-style cupcake illustration featuring pink frosting, a cherry topping, and a light green background. Perfect for sweet-themed projects and playful designs
illustration of cute penguin, perfect for a children or kid theme
illustration of number 1, perfect for a kid school or education theme
Discover the hilarious and absurd world of zombie survival in this lighthearted comedy. Find out why you're perfectly safe from the undead menace and laugh along as these brain-hungry creatures stumbl
Seamless Pattern Featuring Unicorn Heads, Crowns, and Hearts. Pink and Red Color Palette on Light Background. Decorative Design for Kids and Fantasy Themes. Flat Vector Illustration
A playful collage of pastel-colored hearts in various sizes with a 3D paper-cut style, arranged against a clean white background, exuding charm and lightheartedness.
Halloween-themed vector illustration featuring a playful black cat sitting beside a carved pumpkin with two friendly spiders. Perfect for festive designs and Halloween decorations.
A collection of 5 ukulele logo designs inspired by tropical, lighthearted, and creative themes. Perfect for music schools, island branding, or artistic businesses.
Mr Eggs cute Sticker illustration
Three pastel teal hearts are floating on a white background, creating a simple yet charming design suitable for various romantic or affectionate themes
A lighthearted and whimsical illustration of a female heart character holding a playful accessory. A charming design with a subtle hint of grown-up flair.
Colorful umbrellas and fluffy clouds with stylized raindrops. A fun weather-themed design with a vibrant blue background. Great for children’s fabric prints and rainy season decorations.
A playful vector pattern featuring brown horses and red hearts on a white background, ideal for children's designs or romantic themes.
Smiling clown in a cupcake costume with a speech bubble on a black background, creating a humorous and festive design.
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Bright characters in the form of repair tools, on a blue background, demonstrating funny poses and funny facial expressions.
illustration of a cheerful, vibrant-colored Raccoon, perfect for a children's theme
Charming illustration featuring a kitchen-themed poster with a disco ball and playful lettering. Perfect for adding fun and creativity to any cooking space or home decor
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
This adorable cartoon ghost character holds a playful pumpkin, capturing the spirit of Halloween festivities. Perfect for seasonal decorations or joyful illustrations.
Stylish Coffee T-Shirt: First, I Drink Coffee. Then, I Do the Things
Charming smiling blue cloud face cartoon perfect for children's designs. Vector Illustration.
Cute Tree in a Children's Cartoon Style
illustration of a cheerful, vibrant-colored penguin, perfect for a children or kid theme
Flat style illustration of a cute baby elephant standing with a cheerful expression, ideal for childrens books, educational materials, and animal-themed designs.
Cute cartoon ghost fishing for a spider, wearing a hat for a whimsical Halloween twist.
Playful seamless pattern featuring pink disco balls with yellow heart-shaped sunglasses and scattered hearts on a soft pink background
A playful vector pattern featuring red bow ties and black mustaches on a white background, ideal for festive or humorous designs.
Colorful balloons in various shapes create a playful festive atmosphere for a celebration
illustration of a cheerful, vibrant-colored monkey, perfect for a children or kid theme
Whimsical Monkeys: Funny Monkey Faces Vector Illustration Set
illustration of a cute, vibrant-colored elephant, perfect for a children's theme
Fun Prankster T-Shirt Design - Prankster in Action Day 2025
A Gentle Elephant Carrying a Bag, a delightful illustration, showcasing the playful side of wildlife, ideal for children's books and educational materials.
Cute vector illustration of a ghost playing with spiders in a whimsical, web-covered setting. The ghost s playful expression adds a charming touch to this Halloween-themed artwork.
Cartoon Moon Character Playing Video Game with Controller – Cute and Whimsical Nighttime Illustration
Cute and Cartoonish Bunnies: Adorable bunny clip art featuring chubby cheeks, expressive eyes, and endearing poses, perfect for creating charming and lighthearted Easter-themed content.
A cheerful yellow sun with a smiling face and rays extending outward. The design is simple and playful, suitable for children's themes or summer concepts.
Seamless vector pattern featuring charming yellow butterflies and delicate blue bows on a clean white background.
Hand-drawn collection of vector spot art doodles with Christmas theme. Line drawing on one layer, color fills on another and shadow on bottom layer: easy to separate and recolor.
A playful vector pattern featuring watches, hammers, and mustaches, ideal for a quirky design or fabric print.
This vibrant and festive design adds a playful touch to any project, making it ideal for celebrations, crafts, and holiday decor
Vector illustration of a cute squirrel wearing a hat and scarf, surrounded by colorful autumn leaves. Features a playful pattern with acorns and clouds to create a seasonal atmosphere.
Cartoon chair vector with a simple and playful design. Perfect for furniture-themed illustrations, children's books, or interior design projects, adding a fun and lighthearted touch.
Simple festive round frame with Christmas tree decorations. simple vector design is ideal for New Year and Christmas decorations
Sponsored results by Shutterstock Logo
Get 15% off with code: VEXELS15
Illustration of a man with magnifying glass

Sorry, we couldn't find any matches for "lighthearted theme" .

Find the Best Designs for You

Hottest Designs New Merch Designs Browse by Categories

Find the best designs for you

of 2