Hmmm, let's see what I have...
2xA4000 040 (one heavily expanded, one stock)
1xA4000 030 (expanded)
1xA600 Tower (my beloved project)
1xA600
1xA500
2xA1200
2xA1200 Tower (BPPC, Bvision, etc)
1xC128D
3xC64
12xC64C
...And some non-Commodore stuff:
3xSinclair ZX81
1xSinclair ZX81 (boxed)
3xSinclair Spectrum (boxed)
4xSinclair Spectrum
1xSony Paystation
1xSony Playstation 2
1xXBOX
1xNintendo Gamecube
1xNintendo Gameboy
1xSega Megadrive
That's all I think - oh, and some Windows PCs but they don't really count isn't it?