55 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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Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Charming ghost character dressed in a witch hat while holding a pumpkin bucket, embodying the playful side of Halloween celebrations
illustration of a cheerful, vibrant-colored dog, perfect for a children or kid theme
Cute Valentine Scene. Sweet cartoon figure hugging a cat on a pastel purple background with hand-drawn love elements. Ideal for Valentine’s Day cards, posters, and heartfelt designs.
Cute Tree in a Children's Cartoon Style
Hand drawn vector pattern of colorful balloons floating on a white background for festive designs vector illustration
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 Sloth, perfect for a children's theme
A collection of vibrant speech bubbles in various colors and shapes, alongside crayons and a playful balloon. Perfect for artistic projects and communication themes, fostering creativity and fun.
Seamless vector pattern featuring paper airplanes and stars, designed with a playful children’s theme.
A collection of vibrant stickers showcasing football characters celebrating success with encouraging phrases. Perfect for motivating friends or adding fun to sports applications.
Playful seamless Oktoberfest pattern featuring a cartoon waiter and waitress in traditional German outfits, surrounded by beer, sausages, pretzels, and party icons. Childlike naive style. 1:1 format.
Colorful cartoon birds with cute leaves in a playful pattern on a white background
Fun Prankster T-Shirt Design - Prankster in Action Day 2025
A minimalist illustration of four popcorn pieces, suggesting a playful and lighthearted theme.
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
illustration of a cheerful, vibrant-colored penguin, perfect for a children or kid theme
Ghosts with Flowers on Orange Background
Seamless gift pattern featuring vibrant red bows, perfect for enhancing wrapping paper, fabric, and holiday decorations.
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
Cute and playful spider webs with spiders for a festive Halloween touch.
Bright smiling sun with rays shining in a cheerful illustration perfect for summer-themed designs, children's artwork, or sunny day activities
Clown in a cupcake costume on a purple background with a blank speech bubble, perfect for April Fools or humor themes.
Bright floral and egg pattern design for spring celebration or decoration
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
illustration of a cheerful, vibrant-colored penguin, perfect for a children or kid theme
uxurious spruce in a children's cartoon style"
Vibrant illustration of a jester hat with red, green, and blue panels and yellow pom-poms, perfect for festive themes.
illustration of a cheerful, vibrant-colored hippo, perfect for a children's theme
illustration of a cheerful, vibrant-colored rabbit, perfect for a children's 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.
Playful cowboy and horse children's pattern for creative design projects.
Monster Helpers set. Each character embodies a unique work-related concept, bringing a lighthearted touch to professional themes. Vector illustration
illustration of a cheerful, vibrant-colored pig, perfect for a children's theme
A Cute Cartoon Mummy Character Wrapped in Bandages Perfect for Halloween-Themed Illustrations and Decorations, Evoking Fun and Whimsy
A vibrant and playful seamless pattern featuring bold yellow and scattered across a mint green background. Perfect for lively designs, children’s decor, stationery, and cheerful themed projects.
illustration of a cheerful, vibrant-colored Koala, perfect for a children's theme
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Cute ghost pattern with orange background
A playful cartoon character making a silly face and gesture, perfect for fun and lighthearted themes
Vibrant Gradient Circular Backgrounds Set for Spring Cards. Fresh Green Yellow Blue Gradient Background. Heart Shaped Springtime Design for Nature Themed Abstract Circular Art.
Vector illustration of a fairy with blue wings, blonde hair, and green attire. Bright colors and playful expression enhance the whimsical theme
A trio of heart-shaped balloons are depicted in a clean line drawing conveying themes of love and festivity. With their simple style, these balloons exude an airy lightness ideal for celebratory
Cheerful children's design of a girl standing under an umbrella, perfect for playful illustrations, greeting cards, and seasonal designs.
A cheerful illustration features a sweet face with big expressive eyes and a light smile evoking a sense of joy and innocence perfect for childrens themes.
A set of Halloween-themed stickers in doodle art style would feature fun, hand-drawn illustrations with playful, sketchy lines. The doodle style adds a fun and lighthearted feel, perfect for creating
A joyful Black woman with short curly hair is about to eat a pink ice cream cone. She is wearing a white T-shirt and a pink skirt, smiling happily on a warm day. Flat vector illustration.
A monkey and a giraffe in a playful cartoon style stand around a blank rectangular frame. The giraffe holds a flower while the monkey peeks from the side, creating a charming scene. Cartoon vector
Cute cartoon rabbits holding orange eggs in a playful pattern on a white background
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.
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Illustration of a man with magnifying glass

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