Top 10 Accessories for Your Canon Rebel T3i / EOS 600D

I have updated this post for the Canon Rebel T5i / EOS 700D and the Rebel T4i / EOS 650D, which you can now view on this blog here:

Top Ten Accessories for the Canon T5i / EOS 700D

All of the accessories still apply to the T3i and the T2i (EOS 600D, 550D).