Just one word... Plastics! 

Anything that uses plastic is eligible for this contest! Just to give you some ideas, this can include PVC, 3D printing, foam, resin casting, and thermoplastics. However, it is by no means limited to just these suggestions, and we welcome you to surprise us with your plastic ingenuity! The best plastic-related projects will be eligible to win a host of cool prizes including a MacBook Air.

There is also a special prize for the best use of Tinkercad within an Instructable. Include files created using Tinkercad, or embed a 3D model viewer to be eligible.

The Plastics Contest is closed.

Grand Prize


Tinkercad Judges Prizes (1)

One Tinkercad Judges Prize Winner will receive:
  • A $250 Amazon gift card
  • An Instructables prize pack

Grand Prize (1)

One Grand Prize winner will receive:
  • A MacBook Air
  • An Instructables prize pack

First Prize (3)

Three First Prize Winners will receive:
  • A Cricut Explore Air 2 Vinyl Cutter
  • An Instructables prize pack

Second (5)

Five Second Prize Winners will receive:
  • A Leatherman Surge
  • An Instructables prize pack

Runner Up (10)

Ten Runner Up Winners will receive:
  • An Instructables prize pack

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 1, 2018 and Nov 26, 2018 (11:59pm PT).


Upon publishing your Instructable you'll see checkboxes for open contests. Select Plastics Contest. 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.