Since i'm new to the scene, i would like to buy some very cheap, second hand, mining equipment to play with... I don't really NEED any equipment (i'm not desperate), so i'm not willing to pay more than what the equipment is actually worth (i would prefer to do a good deal, even if i have to wait a little longer).

I'm well aware that the chances of getting ROI are very slim, but i don't really care. I just want to try out ASIC mining if i find good equipment for a good price. This is also the reason why i'm not looking for expensive equipment (i'm not looking to setup a big miningfarm)

I found a new antminer U3 on ebay for 70 euro's, but the downside is that it's a big USB miner. I need a PC running at all times to continue mining, but i can't mine at work (because it looks like an asic miner, and since i'm working as a sysadmin, i guess my collegues would know i'm doing something that's not work related).

I'm actually looking for:
- a (very cheap) usb miner that looks like a USBstick (so i can plug it into my workPC, which is running 24/7, and benefit from the free electricity to)
Edited: I won't mine at work, since i don't want to use my job, so all kinds of USB or ethernet miners that costs less than $50 (shipping and escrow included) are acceptable... USB miners, antminer U3's, butterly labs 10GS/s,...
or
- a (very cheap) miner with ethernet connection, so i can set it up at home, but i do not need to run a PC 24/7. The miner should be all-in (include PSU) and in full working condition

Does anybody have some old equipment laying around that is not being used anymore and he/she's willing to sell for cheap?

I would prefer to pay with paypal, since i'm new i don't really have a lot of BTC. If this is really an issue, i guess i can try to find a way to exchange my paypal fund to BTC.
I would also like to mention i don't need an escrow when i can pay with paypal, but i have no problems using one if the seller is requesting this. If i have to pay with BTC, we'll use an escrow without any discussion.

Last point: i'm living in western europe (think the netherlands), so i guess only people from europe will be interested, since shipping fees for non-EU countries would be to high to even make me an offer to sell old, cheap equipment...