Obviously you should dress for the season, but the climbing areas are generally cooler and windier than normal local forecasts may imply. Sunscreen, SPF lipbalm and sunglasses are highly recommended as the sun is quite intense at this altitude. Pick footwear that is well made for scrambling.
Cameras are also great to have along on a climb.
The rock is hard and good cameras are expensive and fragile. Rigging them with a small loop of cord allows you to clip them to your harness so they're accessable. We have yet to see a disposable camera get abused beyond function. The 16-20 oz. Due to our dry climate and the energy expended while climbing, remaining hydrated is very important.