I'm trying to upgrade some lenses, so I have some "starter lenses" available, but most folks here probably couldn't use them:
Sigma 70-300mm 1:4-5.6 DG APO Macro EF Mount
Canon 70-300mm 1:4-5.6 IS USM EF Mount
Nikon (Nikkor) 50mm 1:1.8 manual lens (I have a Nikon->EOS adapter for it, but I'll probably keep that)
I also have a brand new (never used) JAG35 DSLR Rail Kit and some 58mm filters I no longer use.