I also like to get a bunch of these RC connectors. $6 shipping included for 30 sets with male/female ends! Can't do much better than that.
http://www.ebay.com/itm/30-Sets-RC-Mode ... 4ac839f514
I love to use these for connecting battery holders as it makes it super easy to disconnect it from the board if you need to work on it. Just solder to the battery holder wiring and cover with some heat shrink tubing and you're all set.
They're also great for mods. I wired up my Tron lightcycles with these and I can easily take them off for service without pulling all the wiring out.