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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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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.
Smiling clown in a cupcake costume with a speech bubble on a black background, creating a humorous and festive design.
Flat Vector Illustration of Seamless Pattern Combining Abstract Floral and Strawberry Elements. Vibrant Pink, Yellow, and Green Color Palette. Design for Backgrounds, Textiles, Wrapping Paper
A whimsical illustration of Santa Claus on horseback, blending Western cowboy elements with traditional Christmas themes. Perfect for festive holiday designs and greeting cards
Cute Valentine's Day Heart-Shaped Candies with Messages
Festive, Christmas pattern with the image of a cracker and a Christmas tree toy, ideal for printing on paper, fabric
Charming fairy illustration with vibrant colors, featuring blue wings and a green dress. Playful pose and joyful expression enhance the magical theme
Seamless gift pattern featuring vibrant red bows, perfect for enhancing wrapping paper, fabric, and holiday decorations.
illustration of a cheerful, vibrant-colored mouse, perfect for a children's theme
Graffiti tag “Lazy Vibes” street art urban for Hammock Day, chill mural with relaxing summer mood.
watercolor vector illustration poster with positive quote Enjoy little things
Minimal black outline of a fluffy cloud with a smiling face. Cartoon-style design evokes friendliness, good weather, and emotional lightness in nature or children's themes.
A playful collection of cartoon bears showcasing various emotions and poses, perfect for a brand mascot. Includes bear hugs, hearts, and phone delivery themes for engaging designs.
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.
An adorable seamless pattern featuring cute baby hippos enjoying a dip in basin, accompanied by whole and sliced watermelons. The hippos are illustrated in a playful style.
illustration of a cheerful, vibrant-colored deer, perfect for a children's theme
Cute animated lion wearing cap and gown, celebrating graduation, suitable for educational or celebratory content.
Woman Happily Eating A Chocolate Snack. Vector Image Embodies A Sense Of Joy And Satisfaction, Capturing Lighthearted Moment, Perfect For Themes Of Indulgence, Happiness, And Enjoying Small Pleasures
illustration of a cheerful, vibrant-colored Kangaroo, perfect for a children's theme
Fun love-themed stickers featuring hearts, gifts, and sweet treats
A set of four stickers with palm trees and sun suitable for summer-themed designs, travel posters, tropical party invitations, and beach vacation promotions.
Colorful cartoon-style tank adorned with American flag. Tank has big eyes and set against playful background with stars and speech bubbles
Bright cheerful seamless pattern featuring suns and clouds. Simple cartoon-style shapes add charm. For children’s room decor or whimsical designs, textiles like curtains, bedding, and clothing.
Vibrant Blue Bubble Background with Abstract Cloud Elements - Playful and Modern Design for Kids, Winter Themes, and Creative Projects
vector illustration of a bright cartoon goldfish
A seamless pattern featuring sailboats and anchors on a wavy blue background. The design combines nautical elements with a playful, lighthearted feel, ideal for marine-themed projects.
Set of cute spring-themed insect and flower illustrations shown in both outline and colored versions, perfect for children's designs.
A stylized sun illustration with a smiling face. The sun has a round yellow body and elongated orange rays. The design is simple and cheerful, suitable for various themes.
Adorable sloth illustration hanging on a tree branch, perfect for childrens designs, animal-themed projects, or playful prints.
Just Be Cool T-shirt Design Featuring a Cartoon Bear on a Scooter
Bright and cheerful illustration of yellow flowers, creatively arranged with decorative tape. Perfect for designs, seasonal themes, crafting projects, or adding a touch of nature-inspired charm.
Minimalist vector illustration of a heart and envelope in doodle style. Romantic theme with playful lines, deep red accents, and beige background. Ideal for Valentines Day or love-themed designs
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.
Seamless vector pattern of pastel blue Easter eggs with chevron and dot decorations on a white background.
Seamless Pattern of Mermaids with Crowns, Seashells, Starfish, Fish, and Seaweed. Playful Marine Theme on Light Background. Decorative Design for Kids and Fantasy Stories. Flat Vector Illustration
Playful And Trendy "I’m a Snack, Not a Meal" T-Shirt
illustration of a cute, vibrant-colored tiger, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored monkey, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored Koala, perfect for a children's theme
Cheerful pattern of smiling ghosts in white sheets creates a playful, festive backdrop, for Halloween celebrations
illustration of a cheerful, vibrant-colored cow, perfect for a children's theme
Children's cartoon animals with nature elements"
vector illustration of a cute baseball ball mascot making the popular Korean finger heart gesture. Features a joyful character with a big smile and sparkling eyes, perfect for sports-themed design
A cheerful cartoon character with a round yellow body, big eyes, and a wide smile holds a potted sunflower. The character wears gloves and sneakers, walking energetically on a beige background.
Colorful Halloween scene with four characters in costumes collecting falling candies. Trick-or-treating concept
image captures the essence of fall with a playful twist. A variety of autumn leaves in warm shades of yellow, orange, green, and red overlap each other creating a rich tapestry of seasonal colors.
illustration of a cheerful, vibrant-colored Flamingo, perfect for a children's theme
Cute bear illustration isolated on white designed for kids in simple style. Vector illustration
Back to School Cards with Funny Skeleton Student Character
Playful skull characters with various accessories for a fun Halloween theme.
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Illustration of a man with magnifying glass

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