Buying then regretted

I'm a big spender.  I don't have much money, but when I do I spend it. I tend to buy expensive items that I use for a bit then they sit round and don't get used. I then really regret buying them. Most of the time the resell value isn't worth it and I hold on to the items. Heres a list of my regrets:

• Rockband set. I got this in the early days of rockband and it costed a shit load. Plastic thats all it is. It doesn't even take any skill. Highly wish I hadn't got it.
• My Xbox 360. I got this years ago also. Havn't turn it on for about 1.5years. It is one of the first models so is worth nothing
• PS3. I would of been better buying a bluray player. The only games I've really played on PS3 are Uncharted 2 and Metal Gear Solid 4. Everything else just doesn't interest me. 
• Computers. Why do I keep buying computer? I have a a contact that can make them for me but I keep buying them off the net :/
• PSP. My most recent shitty buy. What do I use it for? Images. Thats right. Images. Not even games.

Might do a list later of stuff I'm happy I brought.

In the mean time. I ask you readers. What have you brought and regretted?