I have two (both I made) one by my sewing machine, one on my cutting table.
Then there is one that a co-worker made for me that moves from ironing board to sewing machine area.
Then there are two containers of basting pins that move to wherever I am putting a quilt together.
So that makes 5! And my sewing room is only about 10' x 8'! If I stand in the middle I can reach everywhere in one step or less! :D