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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Set, summer theme, life saving water circles, hello summer, children's illustration, pastel colors, printable set, doodle style, simple style
illustration of a cute, vibrant-colored capybara, 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.
Cartoon pirate pattern with child characters on dark background.
Set of funny animals and trees in children's cartoon style
Charming Dragon Illustration for Fantasy Themes
Hand drawn seamless sunny pattern with yellow happy faces. A fun and lighthearted background perfect for nursery rooms, stationery, wallpapers, and childrens summer themes
illustration of backpack, perfect for a kid school or education theme
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.
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
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.
Simple repeating pattern of cute, smiling ghosts in monochrome. For Halloween-themed textiles, party decorations, web backgrounds
A delightful seamless pattern featuring cheerful cartoon bananas on a vibrant blue backdrop, conveying a playful and lighthearted theme suitable for fun designs.
Colorful birthday party decorations with cake, balloons, and party hats in festive design
Halloween ghost pattern with Spooky and Halloween text, red background, textile, wallpaper, giftcard
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 rabbit, perfect for a children's theme
Colorful celebration icons including masks, gifts, and balloons.
A seamless pattern showcases numerous playful monkey faces with distinct expressions arranged in a grid. This design can enhance various creative projects and themes.
Cute kawaii-style skeleton character with a big smile and soft pastel palette. Suitable for Halloween decorations, children’s content, funny spooky prints, and themed merchandise.
illustration of a cheerful, vibrant-colored owl, perfect for a children's theme
illustration of a cheerful, vibrant-colored zebra, perfect for a children's 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
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Charming Autumn Illustrations Featuring Cute Characters and Cozy Rainy Day Scenes
Adorable and fun elephant illustration sticker. Vector illustration design.
Chicken coloring page. The bold and clear line art makes it easy to color with color reference, a4 paper size printable, very suitable for children's coloring activities
Colorful balloons in various shapes create a playful festive atmosphere for a celebration
illustration of a cheerful, vibrant-colored owl, perfect for a children's theme
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.
Cute outline snake illustration with Santa hat and Christmas lights, with playful and festive holiday theme. Vector hand drawn drawing isolated on white background for coloring pages
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.
illustration of a cheerful, vibrant-colored lion, perfect for a children or kid theme
Cute and playful spider webs with spiders for a festive Halloween touch.
illustration of number 1, perfect for a kid school or education theme
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.
Fun love-themed stickers featuring hearts, gifts, and sweet treats
Vector illustration of expressive socks in a yellow basket. Bold colors and cartoon style enhance the playful theme
illustration of paint brush, perfect for a kid school or education theme
Three clown cupcakes on white background
Colorful turquoise balloons with flowing strings create a festive background pattern
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
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Bright pink balloon floating on a thin black string in a minimalist design
illustration of crayons perfect for a kid school or education theme
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
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
Playful, smiling ghosts dance across a bright background in a charming Halloween pattern, text Boo
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Illustration of a man with magnifying glass

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