回复：得大家经济背景和party理念差不多才好，否则带套lego换个2元店的玩具孩子可能有情绪

Two years ago, my son use two sets of Lego (~$20 each) to exchange other two kids (7 years and 8 years old)' things like birthday goody bag stuff (small plastic duck, small plastic ball etc, and a cheap notebook) and my son is 9 years old at that time, just don't understand what the other parent thought exchange this thing for a 9 years old. I was really not happy. So, no more gift exchange from then on.