I am of two minds, since this is third year at uni I want to be flexible with my time - I really want to avoid working part-time if it interferes with my study. Over the holidays I have basically got ~$500 of working capital that I try to spend strategically at auction and garage sales then then unload on eBay and at market stalls on weekends.
Of course the problem with me is not becoming too attatched to any items, I got a Minolta X-700 SLR camera made in the early '80s that is in beautiful condition with flash, leather carry case, multiple lenses and batteries for $45AUD that I have kept. Well it's not going to depreciate any time soon.
I scored well at an estate auction where I got a few 19th Century first editions with intact boards and gilt - I am getting those on e-Bay and they are selling really cheap compared to dealer prices, but I did buy them really, really, really cheap.