Our guild had a challenge you might enjoy! They went and got paint chips - from the store - the ones that had several colors on each chip. The chips are placed in an envelope (2 copies of same chip) then passed out among the members. They are to then take one chip out without showing it to anybody else. The other chip stays in the envelope - seal the envelope and place your name on the outside of the envelope and turn them in. The challenge is to make something using the colors on your chip! You must match at least 3 colors on the chip and can only have 2 neutrals to go with!
We enjoyed it so much I went to my sisters quilt guild meeting and set them up for the same challenge! They loved it.
Hope this helps