Random items (craft supplies, etc.)
Timer
This one is for teams
This one is probably best inside
Split the groups in to teams, and have each team split in to three groups (you can have teams of 3 with one person in each group). Create enough packages with identical supplies for each team to get two. The first group will have 5 minutes to create something unique using their supplies, they will do this where their team mates can't see. The second group will then have 10 minutes to recreate what the first group made using the same supplies, but they are not allowed to look. The third group are allowed to look at what was made but will have to describe what it looks like to group two. The third group can go back and forth as needed. Final creation that most resembles the original wins.
Scoring is, as always, completely arbitrary, you can award only the winner or award points on a sliding scale. Decide how you wish based on the number of players.
For the "supplies" you can use whatever craft supplies you can find, or really anything works, just use a good number of items.