How many? Good question!
1 A1200 (Not yet in a tower, but soon will be),030/52MHz, 130 Mb, 43GbIDE, DataFlyer SCSI, Ethernet PCMCIA, Mediator LT4+Voodoo3-3000+Realtek8139 soon (all parts are here, lacking finish the tower)
----- Used all days, my main machine -----
2 A600 - one EU PAL, other NTSC. 1.3 Gb IDE & 2 Gb IDE
1 A2000 Toaster, at the moment without accelerator, nor HD , so basically is an A500 in a big box
1 A500 for parts (for the big box above)
A lot of spare parts, Floppyes, Expansion, PCMCIA cards, etc.
And a crappy B.Gaytes box lying around for gross downloads, DVD burning and my wife's use.