<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
Ghost Marshmallow on a Stick, Perfect for Halloween Themes and Cute Designs
illustration of a cheerful, vibrant-colored cat, perfect for a children's theme
illustration of a cheerful, vibrant-colored penguin, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored duck, perfect for a children or kid theme
Colorful striped balloon in cartoon style, vector illustration
Seamless festive pattern featuring gifts and gift boxes adorned with bows. This vibrant design is perfect for wrapping paper, holiday decorations
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.
Pink stripes decorated with small flowers and butterflies
Vector pattern on a summer theme, with the image of a bag, hat, glasses, flip flop, for printing on a banner, fabric, paper, funny style
Colorful pattern featuring playful narwhals and seashells in a whimsical underwater theme
This image showcases a stylized blue monarch butterfly with abstract patterns. The minimalist design highlights intricate details and artistic flair, perfect for creative projects and nature
Bright floral and egg pattern design for spring celebration or decoration
A cheerful cartoon frog with bright eyes and green spots reaching toward a tiny fly above. Set against a vivid turquoise background, this fun vector art captures joy, nature, and playful curiosity.
A playful pattern featuring chocolate donuts with green sprinkles and bunches of bananas on a white background. The design is vibrant and fun, perfect for food-related themes.
Cheerful blue clown cupcake character with a jester hat and red clown nose, celebrating April Fools Day in a playful design.
Illustration of a cowboy boot with playful elements like berries, accompanied by the text Yee Haw. Perfect for Western-themed designs or lighthearted art projects
Birds, Petals, and Hearts Pastel Pattern
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Charming Dragon Illustration for Fantasy Themes
A drawing of a pair of kidneys with red, blue and yellow lines. The drawing is in a cartoon style and has a playful, lighthearted mood
This playful t-shirt print showcases fun cartoon work tools alongside the humorous quote Daddy’s little builder. Perfect for kids goods, toys
Flat Vector Illustration of Seamless Pattern Featuring Red Dragons with Spiked Backs and Long Tails. Stars Scattered Across Light Background. Repeating Decorative Design for Kids and Fantasy Themes.
vector illustration joyful seamless pattern with cartoon goldfish
Fun And Playful Cartoon Ghost Illustration Featuring A Smiling Specter Perfect For Halloween Decor And Festive Designs
Just Be Cool T-shirt Design Featuring a Cartoon Bear on a Scooter
A lighthearted "OK Palm Tree" cartoon vector illustration featuring a palm tree with a relaxed, agreeable expression, perfect for tropical-themed designs, casual artwork, and fun digital projects.
Egg Balancing on Nose for Fun Trick or Challenge Theme
Set of cheerful clowns and balloons in color and black-and-white versions
illustration of a cute, vibrant-colored elephant, perfect for a children's theme
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored shark, perfect for a children's theme
Join us for a spooktacular evening at our Halloween party! Featuring colorful and playful monsters, this event promises fun and festive activities for all ages. Don’t miss out on the eerie excitement
Unique cat-shaped balloon floats against a plain backdrop
Cute cartoon rabbits holding orange eggs in a playful pattern on a white background
Charming ghost character dressed in a witch hat while holding a pumpkin bucket, embodying the playful side of Halloween celebrations
A charming vector illustration of a circular wreath composed of numerous vibrant yellow primrose flowers with dark outlines and subtle shading, creating a delicate and joyful floral frame.
illustration of pencil and erase, perfect for a kid school or education theme
A seamless pattern featuring various cartoon-style clouds on a white background.
Hand drawn Halloween vector seamless pattern with cute ghost cats and candies. Whimsical cartoon background with ghost cats with sweets for spooky design, prints, textile. Festive pattern with kittens
Three pastel teal hearts are floating on a white background, creating a simple yet charming design suitable for various romantic or affectionate themes
A minimalist illustration of four popcorn pieces, suggesting a playful and lighthearted theme.
Vector illustration of a fairy with a green leaf dress, brown hair, and playful pose. Bright colors and whimsical style
Black and white hand drawn doodles fill this simple vector background, offering a lighthearted children’s theme with basic shapes and friendly, joyful illustrations.
This vibrant and festive design adds a playful touch to any project, making it ideal for celebrations, crafts, and holiday decor
Cowboy and horse themed childish pattern with cute characters and cacti.
A friendly ghost floats above a pumpkin with cute clouds in the background, all set against a bright yellow backdrop. Perfect for playful Halloween designs or children's themes.
Flat-style seamless pattern of dumplings on a vibrant pink background. Perfect for culinary-themed designs, food packaging, and creative branding projects.
Funny Skeleton Student with School Supplies. Back to School Design
Playful Halloween scene showing person emerging from coffin surrounded by colorful candy. Spirit of Halloween concept
Fun Prankster T-Shirt Design - Prankster in Action Day 2025
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