I'm from Oshawa.
So far, with the A2000, I've replaced the clock battery, installed a triple kickstart ROM, and upgraded the 68000 with a 68010. I plugged in an old 2090 card I used to use with my old A500 and a slingshot expander. I also have a SCSI Iomega zip drive for it, with more zip disks than I'll ever need!
I have a memory and accelerator card I also picked up at World of Commodore, but it requires a hardware modification to my motherboard to make it work. I'm a little uncomfortable doing that. Changing the clock battery is one thing; cutting traces and soldering in jumper wires is another.
I presently have a legit copy of Workbench 2.04 with full documentation, which is probably what I'll install once I source a decent hard drive and possibly a better hard drive controller. I'm using a 1084s with it, but I also wouldn't mind upgrading the video at some point.
Here's what it looks like as of now:

Besides this and two A500's, I also have a CD32 in my collection to play those AGA games:

I have other Commodores in my collection too; but most are fairly recent acquisitions. 2 C128's, a C64, a 1571, a 1541c, two 1541's, a Vic 20, a C16, a couple datasette drives, a 1701, a 1702, and two more 1084's (one needs the flyback transformer resoldered).
Out of my entire collection, the A2000 is my favourite. :-D