Glori,
I use several different types of displays. For hanging items, I use 2 2 foot by 4 foot framed pegboards hinged at the top. For easy carrying, I added a handle to one side and 2 hooks to keep it closed.
For the larger display area, I made 3 poles using treated 2 x 4's 6 feet high on 1' x 1' bases. I then bought 2 each of 4 x 8' lattice and had it cut at the store down to 2' x 6' sections. I place the 3 posts evenly apart and staple the lattice horizontally across the 3 posts. I then staple a black piece of cloth behind the display. The staples are easily removed afterwards using a screw driver. You can see a picture in my album (toward the end).
For items I can't hang, I use those plastic shelves that can be broken down when not in use. They are very light weight and easy to handle and store. I believe I may even have some pics of some set ups in my album aslo.
What is the length of the front of the booth? Is it the 5 feet or 8 feet across? When you sign up for a craft fair, make sure you know what length the frontal view is. The longer the better. It sounds like you are getting 8 feet across and 5 feet deep.
Linster