D.L.
Hi S.,
When my son turned 3 I bought really cute plastic dessert dishes from the Disney store. I served the cake in it & then let the guests take them home as the party favor instead of those silly gift bags. When he turned 4, we did another park party & we gave the kids sand pails & shovels as the party favor. I brought a marker & put the kids name on it as they arrived to the party. I would not use table cloths (they blow around to much) & buy all recycled paper products. I would also put in the invitation that this is a green party & instead of wrapping paper ask the parents to put the gifts in gift bags that can be reused. If your daughter is opening the gifts in front of everyone you could even give the gift bag back to the giver after the present was opened (no waste). If not, then you'll have a collection of gift bags to use when you are the gift giver.