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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 vector frame composed of stylized yellow butterflies with black outlines, creating a whimsical and delicate border arrangement on a clean white background.
Trendy Soft Pink Petal Pattern
Charming Happy Father’s Day greeting card with pink tones, a heart-shaped background, and a playful mustache element. Ideal for celebrating dads with a lighthearted and loving design theme.
illustration of a cheerful, vibrant-colored monkey, perfect for a children or kid theme
Red balloons with strings arranged in a fun pattern on a white background
illustration of a cheerful, vibrant-colored cat, perfect for a children's theme
illustration of a cheerful, vibrant-colored chicken, perfect for a children's theme
Design a group of super cute cartoon ghosts to go with Halloween.
Funny skeleton waves cheerfully against a black background, perfect for Halloween decorations and themes
illustration of ruler, perfect for a kid school or education theme
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.
Seamless vector pattern featuring adorable cartoon sheep wearing Santa hats and festive holly sprigs, perfect for Christmas-themed designs and winter celebrations.
A Halloween-themed pattern with a lighthearted and playful style. It includes various skulls, bones, and ghosts, along with small stars, all set against a purple background.
Cute jester clown in a cupcake costume with a speech bubble on a light orange background, playful and perfect for April Fools.
illustration of a cheerful, vibrant-colored turtle, perfect for a children's theme
illustration of a cheerful, vibrant-colored frog, perfect for a children's theme
Cheerful pattern of smiling ghosts in white sheets creates a playful, festive backdrop, for Halloween celebrations
Cute Easter-themed illustration with smiling flowers, sun, tree, cake, cupcake, and nature elements.
Ghost Marshmallow on a Stick, Perfect for Halloween Themes and Cute Designs
Delicate pastel wildflowers scattered on a dark indigo background.
Seamless Pattern Featuring Princesses with Crowns, Fairies with Wings and Wands, and Hearts. Magical Composition on Light Background. Decorative Design for Kids and Fantasy Themes. Vector Illustration
Seamless pattern Festive santa claus and christmas presents pattern digital art cheerful atmosphere playful design colorful background
illustration of chalkboard, perfect for a kid school or education theme
illustration of a cheerful, vibrant-colored Crocodile, perfect for a children's theme
A seamless pattern with ice cream, perfect for adding a playful and sweet touch to any summer-themed design.
Seamless pattern of smiling blue clouds, suitable for children's designs
vector illustration bright seamless pattern with cartoon goldfish
illustration of a cheerful, vibrant-colored pig, perfect for a children's theme
Seamless Pattern of Princesses with Crowns, Birds, Stars, Hearts, and Leaves. Playful and Whimsical Design in Red and Pink Tones. Composition for Kids and Fantasy Themes. Flat Vector Illustration.
Cute ducks flying in the Blue Sky, Vector background
Adorable and fun elephant illustration sticker. Vector illustration design.
A whimsical collection of delicate floral patterns in pastel hues perfect for spring.
A playful vector illustration featuring three cartoon ghosts in various poses, each with unique facial expressions, showcasing a whimsical and lighthearted Halloween theme.
illustration of a cheerful, vibrant-colored dog, perfect for a children or kid theme
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.
Fun And Sparkly "Warning: Easily Distracted by Shiny Things" T-Shirt
Charming seamless vector pattern featuring adorable yellow chicks with cracked eggshell hats and simple green leafy branches on a clean white background, perfect for spring and Easter themes.
This whimsical illustration features a charming raccoon holding a lemon with the humorous quote: "In the interest of full transparency, it was not easy peasy lemon squeezy." Perfect for quirky designs
Vector illustration of a fairy with a green leaf dress, brown hair, and playful pose. Bright colors and whimsical style
illustration of a cheerful, vibrant-colored Koala, perfect for a children's theme
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Fluffy clouds and stylized raindrops on a fresh green background. A cheerful seamless pattern perfect for kids’ fabric, decor, and rainy day themes.
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
illustration of a cheerful, vibrant-colored cat, perfect for a children's theme
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
A playful cartoon character making a silly face and gesture, perfect for fun and lighthearted themes
Flat-style illustration of a red mailbox filled with love letters and a note saying With love, perfect for Valentine's Day designs, romantic greetings, or cute themed projects.
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.
A cheerful set of cartoon reindeer in various poses, ideal for festive designs. Perfect for Christmas cards, seasonal decorations, or holiday-themed creative projects with a lighthearted feel.
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Illustration of a man with magnifying glass

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