CD: Centerpiece idea. Gives height variation in centerpiece. Will be a bit of work, but 1 member from each table is allowed to take it home. (OP: Totally want to give these as Christmas presents/birthday presents or something! Maybe for Mother's day?)
Stove-top potpourri kits. Cute gift idea: one orange, 1/2 c cranberries, 1 Tbs whole cloves, 3 sticks cinnamon, a bit of grated nutmeg. Instructions: Quarter the orange, place all in a small saucepan filled with water and simmer on lowest setting. Refill water as needed.