Supplies: Furniture and other heavy items around your home
The photos below show ideas for rearranging things you already have around your home. You can see the progression from one simple item blocking the path for younger ones, to taller more menacing obstacles if you have older children.
You might also consider the things you will receive on Christmas morning. One year my parents got a new mattress and used it in our trap. And in this post, Kandace explains how they got another very large gift that was tricky to get around. Get Creative!