Back in my college days we used to use small bread-boards for simple connections.
Maybe something like this would work good for quick pickup swaps (just a quick sample pic I found on the net to show the size).
Radio shack or similar supply places have these in all kinds of sizes/shapes.
The blue stuff underneath is a product called "Fun-Tak" made by Loc-Tite. I make little pillars out of the stuff and use it for quick pickup swaps, to hold the pickup in place instead of screwing it in (you can quickly move them around easily, get the poles to line up perfectly, try forwad/reverse angles, put it in 180 degrees out, quickly move from neck to bridge, etc).