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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.

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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
illustration of a cheerful, vibrant-colored dog, perfect for a children or kid theme
Kiss a Ginger Day – January 12, 2025, Attractive design, can be used on all social media platforms, beautiful color combination, get it now for the first purchase.
Cute cartoon illustration of characters holding red hearts, symbolizing love and connection. Minimalist style with black outlines and red accents adds charm. Valentines theme
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.
Happy easter bunny with colorful eggs. Easter abstract modern geometry card.
Set of cheerful clowns and balloons in color and black-and-white versions
Flat Vector Illustration of Seamless Pattern Featuring Pink Dragons with Red Spines and Hearts. Repeating Design on Light Background. Decorative Composition for Kids and Fairytale Themes
Seamless Pastel Easter Egg Pattern on Light Background. Colorful Egg-Shaped Pattern in Soft Pastel Tones. Minimalist Pastel Egg Design for Spring
illustration of a cheerful, vibrant-colored wolf, perfect for a children's theme
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
A Cute and spooky western Halloween illustrations featuring smiling pumpkin, playful jack o lantern, and ghostly wagon
Hand drawn simplistic illustration ice cream poster. Flat vector illustration. Perfect background for posters, cover art, flyer, banner.
A seamless pattern of pastel and black balloons floating on a white background.
Playful ghost character enthusiastically shouting "Boo" with raised arms, embodying the fun and festive spirit of Halloween
Dual Halloween ghost pattern, orange and white. For fabric design, packaging, or digital backgrounds
Whimsical blue doodle illustration showcasing summer vacation elements like a palm tree, beach chairs, wine, and mediterranean icons, creating a lighthearted travel-themed design for advertisements
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored zebra, perfect for a children's theme
A cheerful cartoon man with raised arms, expressing joy and celebration. Perfect for themes of happiness and positivity
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Birds, Petals, and Hearts Pastel Pattern
2D Space Man Cartoon with moon ballon in lovely funny style.
Cute cartoon ghost fishing for a spider, wearing a hat for a whimsical Halloween twist.
illustration of a cute, vibrant-colored elephant, perfect for a children's theme
Whimsical floral and abstract shapes seamless pattern design.
A diverse collection of 50 linear dot icons representing various fantasy themes, showcasing elements like carnival, entertainment, and whimsical activities in a playful design.
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Adorable cartoon cat face illustration featuring large, expressive eyes and blushing cheeks. The simple, minimalist design captures a playful and whimsical expression, perfect for children s themes
Adorable bear with a basket of colorful flowers displayed in a charming vector illustration Perfect for designs related to kids, gifts, and nature themes
illustration of a cheerful, vibrant-colored panda, perfect for a children's theme
illustration of a cheerful, vibrant-colored monkey, perfect for a children's theme
Blue balloons floating above the word baby for a celebration
Vector illustration featuring a vibrant monster party theme. Joyful, colorful monsters with wide smiles and expressive eyes create a fun and inviting atmosphere for celebration.
Playful Halloween scene showing person emerging from coffin surrounded by colorful candy. Spirit of Halloween concept
Illustration of cute cartoon tombstone characters with sad expressions isolated on white background, perfect for illustrating themes of grief, loss, or remembrance in a lighthearted manner
Vector illustration of a funny stele with eyes in a children's cartoon style, perfect for fairy tale-themed designs.
A Day Without Soccer Is Like... Just Kidding T-Shirt Design
Funny skeleton waves cheerfully against a black background, perfect for Halloween decorations and themes
watercolor vector illustration poster with positive quote Enjoy little things
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
A cartoon character with four cans of beer. This asset is perfect for beer-related designs, brewery promotions, bar and pub advertisements, and alcohol-themed visual content.
A whimsical collection of delicate floral patterns in pastel hues perfect for spring.
A seamless pattern featuring adorable kawaii tiger cubs. The vibrant colors and charming designs make this illustration perfect for fabric, wallpapers, and childrens products.
Cute cartoon chicken with big eyes and red bow tie. Vector design and PNG transparent background perfect for children content and farm-themed designs
A Gentle Elephant Carrying a Bag, a delightful illustration, showcasing the playful side of wildlife, ideal for children's books and educational materials.
illustration of a cheerful, vibrant-colored owl, perfect for a children's theme
This pattern has cute white bunnies with purple carrots scattered on a teal background, creating a playful, whimsical, and fun design perfect for kids or Easter themes.
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Illustration of a man with magnifying glass

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