Canon EOS 450D
Tokina AT-X 116 PRO DX AF 11-16 mm f/2.8
Tamron SP AF 17-50mm f/2.8 XR Di II LD IF (Non-VC)
Canon EF-S 18-55mm 1:3.5-5.6 IS
Tamron AF 18 - 200 mm F/3.5-6.3 XR Di II LD IF
Canon EF 50mm f/1.8 II
Canon EF-S 60mm f/2.8 Macro USM
Sigma 70-200mm f/2.8 EX DG HSM II
Canon EF 75-300 1:4-5.6 II
+ a few other M42 mount lenses - 28/2.8, 55/2.0, 135/2.8
Canon Powershot G9
Canon Powershot A530
Nissin Di466 Speedlite
Bagman backpack (very crumpler-ish)
Bunnings Foe-Pelican case
Cable, IR shutter releases
Various ND/CPL filters. Pro1D UV filters on the better lenses.
Post processing weapon of choice
Adobe Lightroom 3.5
Try to find time to use it all more!
Look in to the 'strobist' scene beyond the Nissin's built in slave functionality
Invest in a more sturdy tripod
Possibly upgrade to a newer Canon EF-S body for video/high ISO improvements.
Possibly upgrade to a newer compact
Sell off some of my less awesome lenses - I'm looking at you 18-200, 75-300
Possibly downgrade (/sidegrade?) to the Canon 70-200 f/4. As awesome as 2.8 is on the Sigma - it is insanely bulky!
Look further in to film gear - maybe a nice rangefinder or old FD / OM kit