IT stuff
About a dozen optical drives, numerous heatsink/fan combos for Socket A processors, 4x35mm film cannisters full of PC case screws, 5 carrier bags full of various leads and wires (power leads, countless ribbon cables, parallel port printer leads), serial mice, old keyboards, one of which is badged "Acorn" and has an obscure DIN-plug connector.

And backup CDs going back 12 years. Remember when you first got the internet, and you start keeping funny pictures? I have a disk full of them along with sound clips from The Simpsons and Father Ted.

Also, disks full of warez going back years. I'm probably loathe to bin them because of how long it took to download them on dialup. Dreamweaver 3, Corel Draw 8, Windows ME (which turned out to be a Spanish version yet I still burned it to disk) to name a few.

However, the main thing I have kept for no good reason is an Olivetti computer a local school gave me in 1999. It's a dual processor 386, with 387 maths co-pro, a whopping 500Mb ST-506 harddrive complete with Windows 3.1 and Office 4.3, and an 18" long ISA RAM card stuffed with 30-pin SIMMS. It was given to the school by an accountants firm who must have paid well over £6k for it at least. And for that reason I don't want to get rid of it. It seems a shame to take it to tip. It's built from sturdy steel, I could probably get a good few bob for it if I weighed it in.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 3 May 2012, 15:32, 1 reply)

A familiar tale
My pride of redundant IT crap is this prototype Pentium III system right here (I've just patted it and now have a dusty hand) which I daren't throw away as it has dire warning stickers from Intel all over it about it being prototype technology, commercially sensitive, and being individually tracked.

I have no idea who to return it to, paperwork for the initial loan having been lost in a corporate merger many years ago, and I'm far too scared of Intel's feared* Internal Investigation Force to take it down to the dump for recycling.

* - and fictional
( Amish Information Systems hates misplaced, commas, Thu 3 May 2012, 16:33, closed)