I believe myself to have a fair few, maybe not as much as others but I have been given all the older ones so I think I did OK...
Macs
Apple //e - not a "Mac" but it still works and has both the 3 1/2 and 5 1/4 floppy drives and a Monitor II.
Macintosh SE/30 x 6 <-- Of these 4 work, and 2 have graphical issues. Mostly came from schools.
Macintosh Classic x 2
Macintosh SE
Macintosh Plus
Macintosh Portable
PowerBook 150
iBook G3 Tangerine
iBook G4 (1.33GHz) <--Dead hard drive
TiBook 800MHz
iMac G3 x 3 - 2 are tray loading (Lime, OS8.6 and Tangerine, 10.1) and 1 is slot loading (Indigo)
iMac G4 Sunflower - 17" 1.25GHz with 1.5GB of RAM - Sadly this one is dead, I think due to a dead power supply. I want to get it alive again! So if anyone has a 17" iMac PSU....

Soon to get a 15" Sunflower iMac
Mac Mini G4
PowerMac G4/400
MacBook Pro 15" 2006: 2.16 Intel Core Duo with 2GB RAM and a 320GB hard drive. My old machine, retired when I got the Air. I used it from time to time for Firewire-USB transfers until I got the Mac Pro.
Mac Pro 1,1 (2007) 4x3.33GHz Intel Xeons. Upgraded to Radeon X1900 and 16GB of RAM. Has a 128GB SSD and boots in less time than my Air. It's a breaker-blowing beast (really. it does blow the breaker).
MacBook Air 11" 2011 - 4GB of RAM and 128GB SSD. My portable notetaking machine. It's fairly good, though battery life with 10.8 is fairly bad.
iPods
iPod 3rd gen 10gb
iPod 5th gen 60gb
iPod Shuffle 1st gen 512mb
iPod Shuffle 3rd gen 4gb
iPod Mini 1st gen 4gb x 2
iPod Mini 2nd gen 4gb x 2
iPod Nano 3rd gen 8gb
iPod Nano 4th gen 4gb
iPod Nano 6th gen 8gb - got it from the trade-in program and wear it on a Lunatik band.
iPhones
iPhone 1st Gen 8gb - cracked screen

iPhone 3G x 4 - 2 8gb and 2 16gb. 3 of the 4 are broken.
iPhone 3GS 16gb x 2 - 1 works and 1 is messed up, but not completely dead.
iPhone 4 16gb - my current phone
Other
Apple TV 1 running a version of OSX/hackintosh. this was slow as crap.
Non-Apple
some old Toshiba (Satellite 2000CDS?) - my first lappy, running Windows 98
another old Compaq (like a really old netbook) running Windows 3.1 with a PCMCIA floppy drive
So yeah. I'm pretty proud of my collection, but looking at some of you guys' puts me back in my place
The two I probably really want the most right now are the PowerMac G4 cube or a TAM. Both are quite expensive on my local classifieds (and I don't expect the TAM to drop anytime soon)
Also really want a iPod 1st or 2nd gen but can't find one, again they are quite expensive (but less than the TAM)
keep collecting, guys!