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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Sweet illustration of a white puppy with pink ears sitting on a pastel mint green background. Perfect for lighthearted and joyful design themes.
illustration of a cheerful, vibrant-colored sheep, perfect for a children's theme
illustration of a cheerful, vibrant-colored duck, perfect for a children or kid 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.
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
Whimsical hand drawn line art of crab featuring distinct spots and claws, playful design. The crab appears poised, reflecting a lighthearted sea theme. Vector outline illustration
Minimalist design of round black glasses paired with a red clown nose, highlighting humorous and playful themes.
A playful cartoon skull features oversized eyes and a smooth surface. This design could be used for Halloween decorations, costume designs, or children's crafts, adding a whimsical touch.
A watercolor vector background of ethereal blue clouds with heart-shaped accents. Delicate shades of azure and cerulean sense of magic and wonder. Dreamy illustration
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
A playful vector pattern featuring ties, hammers, and mustaches on a white background. The design is colorful and whimsical, suitable for various creative projects.
illustration of a cheerful, vibrant-colored rabbit, perfect for a children or kid theme
Playful Cute Shark With Smile Logo Design Suitable For Kids Or Marine Themed
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
illustration of a cheerful, vibrant-colored hippo, perfect for a children's theme
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
A diverse collection of 50 linear dot icons representing various fantasy themes, showcasing elements like carnival, entertainment, and whimsical activities in a playful design.
illustration of school bus, perfect for a kid school or education theme
illustration of a cheerful, vibrant-colored zebra, perfect for a children's theme
Hand drawn simplistic illustration ice cream poster. Flat vector illustration. Perfect background for posters, cover art, flyer, banner.
Flat Vector Illustration of Seamless Pattern Featuring Unicorns, Rainbows, Stars, and Hearts. Playful Composition in Pink and Red Tones. Decorative Design for Kids and Fantasy Themes
Colorful celebration icons including masks, gifts, and balloons.
Two cartoon fairies with golden hair in white dresses joyfully dancing, showcasing vibrant expressions and dynamic movement
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Minimalist illustration of a black, curled mustache with a whimsical design, ideal for humor or April Fools themes.
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
Whimsical Monkeys: Funny Monkey Faces Vector Illustration Set
Cute cartoon butterfly with colorful wings and cheerful smile isolated on transparent background. Perfect for kids designs, educational materials, and playful themes. Vector illustration.
Variety of colorful summer-themed frozen desserts
Cute and Cartoonish Bunnies: Adorable bunny clip art featuring chubby cheeks, expressive eyes, and endearing poses, perfect for creating charming and lighthearted Easter-themed content.
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
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
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
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.
illustration of a cheerful, vibrant-colored dog, perfect for a children or kid theme
Seamless pattern with hand-drawn green trees on a white background, ideal for nature-themed designs and wallpapers.
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
A seamless pattern featuring adorable kawaii tiger cubs. The vibrant colors and charming designs make this illustration perfect for fabric, wallpapers, and childrens products.
Birds, Petals, and Hearts Pastel Pattern
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
A drawing of a pair of kidneys with red, blue and yellow lines. The drawing is in a cartoon style and has a playful, lighthearted mood
"Life's About Goals (and Assists) - Soccer Motivational T-Shirt Design"
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
A charming line-drawn Christmas tree topped with a cowboy hat conveys a unique and playful holiday spirit. The text Oh Christmas Tree adds festive cheer to this whimsical artwor
A humorous vector illustration of a cartoon knight facing an angry bear, highlighting exaggerated expressions and vibrant colors
illustration of a cheerful, vibrant-colored pony, perfect for a children's theme
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
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Illustration of a man with magnifying glass

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