Contest idea, reward: Patch + best answer

I got upgraded to pro and now I have 14 of my 15 patches left. If someone can tell me a good idea for a K'nex contest (which I will host), he or she will be rewarded with a best answer and a patch. I don't know what to do with them anyway. I don't want the contest to involve guns

Thanks for your time.

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Sorunome7 years ago
The best working knex calculator. That would be complicated.
Mr. Muggle (author)  Sorunome7 years ago
Right now this idea is my favourite but I'm going to wait a little longer before I pick one.
cool!! :D
~KGB~7 years ago
make a ball machine.
NatNoBrains7 years ago
Most useful ( everyday ) like a k'nex stapler or a k'nex bag or something.
Mr. Muggle (author)  NatNoBrains7 years ago
has been done a few times already
Kairah7 years ago
A marble machine that fits in a red rod box, so the maximum size should be one red rod in every direction.

Would be fun if you had like several small marble machines that you could just stack up on each other. 
Mr. Muggle (author)  Kairah7 years ago
I like that idea, it would take alot of skill though
I vote for this one.
cj814997 years ago
personally i would like to see a cat toy contest i think it would be cool. the toy could be knex or use knex to hold the toy ( or somthing). if you dont like go with the red rod ball machine idea.
bounty10127 years ago
How about a sculpture contest or a building contest?
How about a contest for k'nex creations that are functional for everyday use as opposed to toys?
zchan11207 years ago
Ball machine
H1T4TCH17 years ago
A full controllable (steering + driving) K'nex car.
Controllable walker using normal motors only, no cyber.