I've acquired the following pieces from work and eBay for my CCNA. I'm looking to get a CCNP as well afterwards so will expand more later.
2511 - 16D/16F - 12.3.26-IP PLUS
1720 - 48D/16F - 12.4.19-IP - WIC-1T
2610XM - 256D/48F - 12.4.19/12.4T-AdvEntServices + SDM - NM-8A/S - WIC-1B-ST
2610XM - 256D/48F - 12.4.19/12.4T-AdvEntServices + SDM - None - WIC-1SHDSL - WIC-2T
2610XM - 256D/48F - 12.4.19/12.4T-AdvEntServices + SDM - None - WIC-1SHDSL - WIC-1T
2950-24 - 12.1.22-EA11(ED) - SI
2950-24 - 12.1.22-EA11(ED) - SI
AP1242AG - 12.4.10b-JA3
PIX-506E - 128D - 7.1 - No ASDM
The most useful item has to be the 2511. Constantly having to move the console cable around was getting tedious to say the least. The AP and PIX aren't doing anything at the moment but I may replace one of my WRT54GS' just to experiment. Might get a basic ASA5505 + 10 user license as wedging PIX OS 7.1 onto the 506E works but I have to leave ASDM out to manage it.
I have a vast pile of Cisco Press books as well which I'm slowly reading through

Next step hardwarewise is to get a decent rack and put it into my garage or something. The fan noise from the lab is pretty loud and distracting.