We spent Thursday night packing up our gear. If nothing else, triathlons require a ton of stuff! I found a great gear checklist at http://triathlon.racechecklist.com/. It lets you go through each category (swim, bike, run, clothing, misc) and select the items you want to include on your list. You can also add extra items that are not listed.
Clothing & Shoes: Flip flops (before the race), running shoes, cycle shoes, hat, towel, 2 pairs of socks, triathlon shorts, and triathlon top.
Cycle gloves, race number belt, chip strap (to attach timing chip to ankle), sunglasses, 2 sets goggles, 2 swim caps, & watch.
Rinse bottle (to rinse feet after swim), bike water bottle, Sport Beans/GU/Energy Blocks, Glide (helps for wet suit), permanent marker (for marking your race number on arm), sunblock and plastic bag to cover shoes if it is raining.