I have received swag such as: anadized 8020, bandannas with team numbers screen printed on, pins, pens, mini cd-roms with team logo printed on them, and the data was team info, lanyards, badges, engraved keyrings, mousepads, mini tape measures, laundry bag sack, t-shirts, pencil cups, stickers (Moe365 had a great sticker in 2001, or 2002), dog tags, bandade holders.
Some other suggestions are customized pen drive, rubber stamper, post-it notepad, mini flashlight, business/trading cards with team info, mini screen cleaner brush.