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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 Cute umbrella with smiling raindrops, perfect for rainy day theme
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
Vector illustration of a cute baseball ball mascot happy dancing. Features a joyful character with a big smile, lively movements, and a festive atmosphere, perfect for sports-themed designs
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
A cheerful cartoon character with a round yellow body, big eyes, and a wide smile holds a potted sunflower. The character wears gloves and sneakers, walking energetically on a beige background.
illustration of a cheerful, vibrant-colored chicken, perfect for a children's theme
illustration of a cheerful, vibrant-colored goat, perfect for a children's theme
Adorable and fun elephant illustration sticker. Vector illustration design.
Cute cartoon birds on a deep blue background in a playful pattern design
Ice Cream Cartoon T-shirt Design with Fun, Colorful, and Playful Graphics
Adorable cartoon bear holding a big orange heart with floating hearts above. Perfect for Valentines Day, love, and friendship themes. Cute Bear Holding Heart with Love
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
illustration of a cheerful, vibrant-colored rabbit, perfect for a children or kid theme
Cute Valentine's Day Heart-Shaped Candies with Messages
Pixel fly balloons vector. Ideal for celebration designs, festive events, or childhood themes. These pixel art balloons float upwards, conveying a sense of joy and lightheartedness.
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.
Cute pixel christmas pattern seamless background. Coffee cup with mini heart, gift, christmas trees, snowflake design for cosy way. Idea for home decor, festive background, any creative project.
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.
A playful pattern featuring chocolate donuts with green sprinkles and bunches of bananas on a white background. The design is vibrant and fun, perfect for food-related themes.
A playful vector illustration featuring three cartoon ghosts in various poses, each with unique facial expressions, showcasing a whimsical and lighthearted Halloween theme.
Bright characters in the form of repair tools, on a blue background, demonstrating funny poses and funny facial expressions.
illustration of crayons perfect for a kid school or education theme
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.
A seamless weather-themed pattern featuring playful depictions of rainbows, suns, clouds, raindrops, and lightning. Hand drawn vector image.
Green balloons with bunny ears in a repeating pattern for festive decoration
A cartoon knight holds a chicken drumstick, facing an angry bear. Bold colors and exaggerated expressions enhance the humor
A collection of 5 ukulele logo designs inspired by tropical, lighthearted, and creative themes. Perfect for music schools, island branding, or artistic businesses.
A charming outline illustration of a ghost riding a ferris wheel evoking themes of Halloween fun amusement parks and lighthearted spooky adventures.
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 cheerful, vibrant-colored bear, perfect for a children's theme
Seamless Pattern Featuring Fairies with Crowns and Wands, Castles, Stars, Hearts, Swords, and Cherries. Whimsical Design in Pink and Red Tones for Kids and Fantasy Themes. Flat Vector Illustration.
A whimsical male fairy with blue wings, wearing green attire. Vibrant colors and playful expression enhance the fantasy theme
illustration of a cheerful, vibrant-colored lion, perfect for a children or kid theme
Back to School Cards with Funny Skeleton Student Character
Monster Helpers set. Each character embodies a unique work-related concept, bringing a lighthearted touch to professional themes. Vector illustration
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Funny love-themed doodle stickers with hearts, gifts and sweet treats for Valentine's Day
Blue polka dot balloon in cartoon style, vector illustration
illustration of notebook, perfect for a kid school or education theme
The word JOLLY concept written in colorful abstract typography. Vector EPS 10 available.
A cartoon hippo and monkey sit beside a heart-shaped frame holding a flower in line art style. The hippo and monkey are outlined simply, creating a playful and charming scene. Cartoon vector
Blue balloons floating above the word baby for a celebration
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
Seamless Cute Sleeping Cats and Moons Pattern for Cozy Pajamas, Pet-Themed Prints, or Relaxing Nighttime Designs
A cartoon-style cloud with a grey fill and a dark outline. Ideal for weather themes, children projects, educational materials, environmental illustrations, and digital design concepts. Minimalist
illustration of a vibrant-colored Giraffe, perfect for a children or kid theme
illustration of a cheerful, vibrant-colored Flamingo, perfect for a children's theme
Playful skull characters with various accessories for a fun Halloween theme.
Adorable illustration of a cartoon llama with a colorful saddle blanket, perfect for children's designs
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Illustration of a man with magnifying glass

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