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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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A fun and colorful pattern featuring chocolate donuts with green sprinkles and pineapples on a white background. Ideal for food-related designs or playful themes.
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
illustration of a cheerful, vibrant-colored pony, perfect for a children's theme
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.
illustration of a cheerful, vibrant-colored chicken, perfect for a children's theme
Playful Halloween scene showing person emerging from coffin surrounded by colorful candy. Spirit of Halloween concept
Certified April Fools' Day T-Shirt Design - "Laugh Out Loud Guaranteed!"
Hand drawn simplistic illustration ice cream poster. Flat vector illustration. Perfect background for posters, cover art, flyer, banner.
Seamless vector Valentine's Day template with a scattering of soft pink hearts in cartoon style
Cute animated lion wearing cap and gown, celebrating graduation, suitable for educational or celebratory content.
Vector illustration of expressive socks in a yellow basket. Bold colors and cartoon style enhance the playful theme
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Cartoon-style burglar dressed in warm clothes with a sack, symbolizing crime, mystery, and detective themes in a lighthearted, animated design
A set of four stickers with palm trees and sun suitable for summer-themed designs, travel posters, tropical party invitations, and beach vacation promotions.
Cute ghost pattern with orange background
Colorful striped party hat ready for celebration during a festive event
Charming illustration featuring a kitchen-themed poster with a disco ball and playful lettering. Perfect for adding fun and creativity to any cooking space or home decor
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
A playful kitten engrossed in reading, ideal for children's book illustrations or educational content.
uxurious spruce in a children's cartoon style"
A vibrant collection of pinwheels in various colors and designs, perfect for playful and cheerful themes.
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
A playful "Funny Palm Tree" cartoon vector illustration with a humorous facial expression, perfect for tropical-themed digital designs, beachy artwork, and lighthearted graphic projects. Scalable and
A collection of cartoon-style coronavirus characters showcasing a range of emotions like happiness, sadness, confusion, and frustration, adding a playful touch to serious themes.
A stylized graphic illustration featuring a trios of floating balloons icon in a circle, conveying themes of celebration, festivity, and cheerful events. The minimalist design employs clean lines
illustration of a cheerful, vibrant-colored rabbit, perfect for a children or kid theme
A cute halloween themed illustrations featuring various characters like ghosts, skulls
A cute heart trapped in a spider web, conveying a playful theme.
illustration of a cheerful, vibrant-colored mouse, perfect for a children's theme
illustration of chalkboard, perfect for a kid school or education theme
A lighthearted green leafy branch perfect for spring and summer nature-themed designs.
illustration of a cheerful, vibrant-colored lion, perfect for a children or kid theme
Charming illustration of a funny gift box character with a playful expression. This whimsical design is perfect for adding a joyful touch to greeting cards, party invitations, and festive decorations
Moon-shaped balloon floating against a minimal background
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.
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.
Colorful balloons in various shapes design for festive celebrations and events
Unique cat-shaped balloon floats against a plain backdrop
Funny Skeleton Student with School Supplies. Back to School Design
illustration of a cheerful, vibrant-colored monkey, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Lighting Candles with Family illustration for web app infographic etc
Simple repeating pattern of cute, smiling ghosts in monochrome. For Halloween-themed textiles, party decorations, web backgrounds
A charming repeating pattern showcasing a variety of small birds in different poses, creating a lively and natural design.
Funny T-Shirt Design: I Put the Pro in Procrastinate with Humor Icons
A whimsical illustration of cartoon Sausages with smiling faces, displaying a playful and cheerful vibe against a dark backdrop. Perfect for fun, fantasy, and imaginative themes in various application
illustration of a cheerful, vibrant-colored chicken, perfect for a children's theme
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.
illustration of a cheerful, vibrant-colored pony, perfect for a children's theme
Green balloons with bunny ears in a repeating pattern for festive decoration
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Illustration of a man with magnifying glass

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