Activity for Rebekah

Other than Facebook Marketplace, are there any other good sites to buy used wedding stuff? Like decorations, tableclothes, etc.

I'm planning on having my step daughters (21, 19 & 12) and my 5 year old niece as my bridesmaids. Since our ceremony will only have our kids and nieces/nephew in it I need to think budget friendly because I'll be paying for most of them (we have...