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Browse our challenge-windows collection — designs from independent artists across the Threadless community. Every piece is artist-led, sold direct, and produced on demand.

  1. Funkalicious
    Funkalicious by Fen
  2. JITTER LIQUID ICON
    JITTER LIQUID ICON by nathanwpyle1982
  3. Dearest Dandelion
    Dearest Dandelion by rlthull
  4. Lost in Glitch
    Lost in Glitch by digitalcarbine
  5. Capture the Moment
    Capture the Moment by HabbyArt
  6. Night Garden Cat
    Night Garden Cat by episodicDrawing
  7. Perching Raven
    Perching Raven by rlthull
  8. I Love Being Around You
    I Love Being Around You by nathanwpyle1982
  9. Autumn Mushrooms
    Autumn Mushrooms by episodicDrawing
  10. Cat Tree
    Cat Tree by tobefonseca
  11. Autumn Light Underwing
    Autumn Light Underwing by episodicDrawing
  12. The Beetles
    The Beetles by rlthull
  13. Planet System
    Planet System by b3rni
  14. Going Where the Wind Blows
    Going Where the Wind Blows by radiomode
  15. We've Got Some Work To Do Now
    We've Got Some Work To Do Now by alternate persona
  16. the spookitties
    the spookitties by poorlycatdraw
  17. STRANGE PLANET SPECIAL PRODUCT: WILDLY UNPREPARED
    STRANGE PLANET SPECIAL PRODUCT: WILDLY UNPREPARED by nathanwpyle1982
  18. Illinois
    Illinois by nathanwpyle1982
  19. STRANGE PLANET SPECIAL PRODUCT: I AM A BEACON OF JOY
    STRANGE PLANET SPECIAL PRODUCT: I AM A BEACON OF JOY by nathanwpyle1982
  20. Ghost Of Disapproval
    Ghost Of Disapproval by obinsun
  21. do not push
    do not push by poorlycatdraw
  22. Still Caring
    Still Caring by HabbyArt
  23. Hugs Keep Us Alive!
    Hugs Keep Us Alive! by ilovedoodle
  24. Felix the cat vintage
    Felix the cat vintage by rocketmantees
  25. The Beauty of Imperfection
    The Beauty of Imperfection by ppmid
  26. STRANGE PLANET SPECIAL PRODUCT: RECREATIONAL DECEPTION
    STRANGE PLANET SPECIAL PRODUCT: RECREATIONAL DECEPTION by nathanwpyle1982
  27. Tokyo Zoo
    Tokyo Zoo by DinoMike
  28. Coffee Cat in Mt. Fuji
    Coffee Cat in Mt. Fuji by vincenttrinidad
  29. The Return of Vampurr
    The Return of Vampurr by khairulanam87
  30. Science is Magic
    Science is Magic by csweiler
  31. Crescent Moon Glitch
    Crescent Moon Glitch by digitalcarbine
  32. Worship Coffee
    Worship Coffee by stevenrhodes
  33. A Book Lover
    A Book Lover by ilovedoodle
  34. Stay Positive
    Stay Positive by stevenrhodes
  35. Luna and Forester
    Luna and Forester by episodicDrawing
  36. FRANKIE GOES TO HOLLYWOOD
    FRANKIE GOES TO HOLLYWOOD by los tomatos
  37. If Not Now Venn
    If Not Now Venn by nathanwpyle1982
  38. MARYLAND
    MARYLAND by nathanwpyle1982
  39. False Positive
    False Positive by DRO72
  40. Last Night
    Last Night by expo
  41. STRANGE PLANET SPECIAL PRODUCT: RESPECT THE DEATH BLADES (BLUE)
    STRANGE PLANET SPECIAL PRODUCT: RESPECT THE DEATH BLADES (BLUE) by nathanwpyle1982
  42. compose myself
    compose myself by nathanwpyle1982
  43. oeuf
    oeuf by nathanwpyle1982
  44. MY BODY IS IN DECLINE
    MY BODY IS IN DECLINE by nathanwpyle1982
  45. Retro Whale Pod
    Retro Whale Pod by rlthull
  46. The Collector
    The Collector by camillechew
  47. Damn Scientists
    Damn Scientists by botnet
  48. Lying Cat
    Lying Cat by sagacomic
* Comparison prices are references to regular retail prices of the same or similar items in Artist Shops or at third party retail locations. Savings may vary over time.