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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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Red balloons with strings arranged in a fun pattern on a white background
A whimsical male fairy with blue wings, wearing green attire. Vibrant colors and playful expression enhance the fantasy theme
A playful vector illustration featuring three cartoon ghosts in various poses, each with unique facial expressions, showcasing a whimsical and lighthearted Halloween theme.
Playful illustration of a sun with a friendly smile, radiating happiness and positivity. Ideal for designs focused on fun, joy, and cheerful themes. Perfect for children's materials
Cartoon fridge with eyes and mouth sticking out of it. This playful asset is perfect for children's illustrations, kitchen-themed designs, and quirky product packaging.
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
Vibrant illustration of a jester hat with red, green, and blue panels and yellow pom-poms, perfect for festive themes.
Hand drawn simplistic illustration ice cream poster. Flat vector illustration. Perfect background for posters, cover art, flyer, banner.
illustration of a cheerful, vibrant-colored Koala, perfect for a children's theme
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
illustration of a cheerful, vibrant-colored deer, perfect for a children's theme
This kids t-shirt design showcases cartoon work tools alongside the playful quote my tools my rules, perfect for inspiring little builders' imaginations during playtime or casual outings.
illustration of a cheerful, vibrant-colored Kangaroo, perfect for a children's theme
illustration of school bus, perfect for a kid school or education theme
A whimsical pink balloon with white stripes, featuring a curly dark string. Ideal for children's themes, festive events, or creative designs needing a playful touch
A playful cartoon illustration of a white eyeball with a brown iris and a smiling mouth, adorned with golden-white wings, suggesting movement and a lighthearted fantasy theme. Eyeball Wings Retro.
Fun And Playful Cartoon Ghost Illustration Featuring A Smiling Specter Perfect For Halloween Decor And Festive Designs
A seamless pattern with ice cream, perfect for adding a playful and sweet touch to any summer-themed design.
Playful seamless pattern of firecrackers, ideal for fabric and paper printing. This vibrant design brings a festive spirit to any project, perfect for celebrations, crafts, and holiday decorations."
Cute orange cat practicing mindfulness, surrounded by positive emotions, perfect vector for mental health and self-care themes
Cheerful chicken in a children's cartoon style, vector illustration
Fun And Sparkly "Warning: Easily Distracted by Shiny Things" T-Shirt
Design of kids t-shirt print with a bright yellow safety helmet and the quote born to build. Perfect for little builders ready to show off their creativity and love for construction.
illustration of a cheerful, vibrant-colored Flamingo, perfect for a children's theme
Charming fairy illustration with vibrant colors, featuring blue wings and a green dress. Playful pose and joyful expression enhance the magical theme
A seamless pattern featuring various cartoon-style clouds on a white background.
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.
Cheerful balloons shaped like clowns and stars in a cartoon style. Festive balloons and clowns with hats in a children's cartoon vector illustration
Trendy Soft Pink Petal Pattern
Vector illustration of a tombstone with engraved RIP lettering on a white background, suitable for various projects dedicated to the theme of loss and funerals
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.
illustration of a cheerful, vibrant-colored fish, perfect for a children's theme
ink heart with wings in a whimsical vector illustration, symbolizing love, affection, and romance. Ideal for Valentine's Day themes or romantic design elements.
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.
illustration of a cheerful, vibrant-colored cow, perfect for a children's theme
Cute and quirky Great for kids, party decor, or lighthearted romantic gifts
Delicate transparent balloons floating upwards, perfect for party themes, celebration designs, or whimsical event visuals. Ideal for invitations, decorations, or lighthearted branding.
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored penguin, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored penguin, perfect for a children's theme
Pink balloon shaped like a bear face floating against a plain background
Colorful striped balloon in cartoon style, vector illustration
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Playful skull characters with various accessories for a fun Halloween theme.
A Cowboy hats in various styles showcase creativity and fun, perfect for any adventurous spirit
illustration of a cheerful, vibrant-colored hippo, perfect for a children's theme
Simple repeating pattern of white ghosts on a dark blue backdrop, for Halloween decorations, textile prints, event branding
A striped sphere is shown in a cartoon drawing style. The playful round object is perfect for summer activities and coastal themes. Cartoon vector illustration
A cheerful cartoon man with raised arms, expressing joy and celebration. Perfect for themes of happiness and positivity
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Illustration of a man with magnifying glass

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