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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Watercolor seamless pattern background featuring cute green creature with butterfly, tropical leaves, and flowers, perfect for wallpaper design
Playful, smiling ghosts dance across a bright background in a charming Halloween pattern, text Boo
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.
illustration of a cheerful, vibrant-colored cow, perfect for a children's theme
Colorful balloons in various shapes create a playful festive atmosphere for a celebration
illustration of a cheerful, vibrant-colored peacock, perfect for a children's theme
Seamless Easter-themed pattern featuring playful bunnies with eggs, colorful rainbows, carrots, and baskets of eggs on a light gray background. Perfect for seasonal designs.
Charming fairy illustration with vibrant colors, featuring blue wings and a green dress. Playful pose and joyful expression enhance the magical theme
Funny Mom Themed SVG Pack: Hand-Drawn Typography Quotes and Illustrations - Suitable for T-Shirts, Posters, and More
A diverse collection of 50 linear dot icons representing various fantasy themes, showcasing elements like carnival, entertainment, and whimsical activities in a playful design.
Black and white hand drawn doodles fill this simple vector background, offering a lighthearted children’s theme with basic shapes and friendly, joyful illustrations.
This vibrant and festive design adds a playful touch to any project, making it ideal for celebrations, crafts, and holiday decor
minimalist teddy bear outline illustration with smiling face and waving gesture, perfect for children's creative themes on white background
National Pink Day is a lighthearted day encouraging people to wear pink, share pink-themed items, and raise awareness for causes often associated with the color, such as breast cancer awareness.
Creative illustration of a cartoon snake symbolizing the number three. Snake symbol of the year. Vector hand drawn bold illustration
Cute cartoon rabbits holding orange eggs in a playful pattern on a white background
illustration of a cute, vibrant-colored capybara, perfect for a children's theme
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
illustration of a cheerful, vibrant-colored bear, perfect for a children's theme
Smiling orange clown cupcake with curly hair, red clown nose, and a party hat, perfect for April Fools celebrations.
Smiling butterfly with teal and pink patterned wings, perfect for spring decor, whimsical illustrations, or lighthearted insect-themed children’s designs.
Playful skull characters with various accessories for a fun Halloween theme.
illustration of a cheerful, vibrant-colored Raccoon, perfect for a children's theme
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.
Sweet cat character adorned with angel wings and a halo, embodying purity and cuteness in a charming cartoon style
illustration of a cute, vibrant-colored elephant, perfect for a children's theme
Whimsical Monkeys: Funny Monkey Faces Vector Illustration Set
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.
Cute orange cat practicing mindfulness, surrounded by positive emotions, perfect vector for mental health and self-care themes
illustration of a cheerful, vibrant-colored cat, perfect for a children's theme
Hand drawn simplistic illustration ice cream poster. Flat vector illustration. Perfect background for posters, cover art, flyer, banner.
Cartoon cat with sunglasses and a cat paw. Fun and stylish design suitable for summer-themed graphics, pet-related products, and children's illustrations. Perfect for adding a playful touch to various
illustration of a cheerful, vibrant-colored pig, perfect for a children's theme
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Hand drawn vector pattern of colorful balloons floating on a white background for festive designs vector illustration
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
Playful Cute Shark With Smile Logo Design Suitable For Kids Or Marine Themed
Happy Cartoon Cats in a Cute Doodle Style , Cute hand drawn doodles ,Illustration Vector
illustration of a cheerful, vibrant-colored cat, perfect for a children's theme
Adorable ghost character wearing a playful pumpkin-themed hat and holding a smiling pumpkin bucket, perfect for Halloween festivities
Playful ghost character enthusiastically shouting "Boo" with raised arms, embodying the fun and festive spirit of Halloween
Illustration of a cowboy boot with playful elements like berries, accompanied by the text Yee Haw. Perfect for Western-themed designs or lighthearted art projects
Vector illustration of a green balloon shaped as number three tied to a blue lizard. Bright colors and playful composition
Graffiti tag “Laugh” in bold street handstyle. Urban vector lettering with joyful and expressive vibe—ideal for humor themes, positive street culture, and fun lifestyle graphic designs.
illustration of a cute, vibrant-colored capybara, perfect for a children's theme
illustration of a cheerful, vibrant-colored goat, perfect for a children's theme
Humorous Cartoon Cockroach Depicted In Different Comical Situations And Expressions. Vector Insect Themed Illustrations
Dual Halloween ghost pattern, orange and white. For fabric design, packaging, or digital backgrounds
illustration of a cheerful, vibrant-colored pony, perfect for a children's theme
Seamless Pastel Easter Egg Pattern on Light Background. Colorful Egg-Shaped Pattern in Soft Pastel Tones. Minimalist Pastel Egg Design for Spring
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Illustration of a man with magnifying glass

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