This two-week speed challenge is your chance to win big, in a hurry!

We want to see your best uses of cardboard in a project, so think fast and get into your workshop. Share your cardboard creations by October 21st for your opportunity to score a gift card from Instructables!

The Cardboard Speed Challenge is closed.

9 Prizes

First Prize (1)

One First Prize winner will receive:
  • $200 Gift Card  

Second Prize (3)

Three Second Prize winners will receive:
  • $100 Gift Card 

Third Prize (5)

Five Third Prize winners will receive:
  • $50 Gift Card
How It Works

Write an Instructable

Create a new Instructable that fits the guidelines outlined in the contest description above. To be eligible, Instructables must be published between Oct 7, 2019 and Oct 21, 2019 (11:59pm PT).


Upon publishing your Instructable you'll see checkboxes for open contests. Select Cardboard Speed Challenge. If you have entries currently eligible for entry, it will also show up by clicking "Enter this Contest" on the right side of this page.


Entries are accepted by Instructables staff within one business day Monday - Friday. What matters is the submission time, not acceptance time.


A panel of judges made up of Instructables staff and respected members of the community rate the finalists. The averages of the ratings determine the winners.


When the winners are decided they will be notified and announced here on the contest page.