Hi, besides mining, only other ways I know are buy/sell against other coins, can try faucets (though would take a long time to accumulate - but can always do in free idle time.
I have compiled a small list in a blog of mine with some links to sites.. They were all working as of Sept 5th, 2013.
Most links are for faucets, but I have a few for a couple of my favourite markets (Cryptsy and Vicurex). And I've had slight issues with both in the couple months I've used them, but the Admins of both sites are very quick to help and get issues resolved
In all honesty though, My favourite is Trading against other coins on the market.. Out of 1.0BTC sometimes I can make about 0.1-0.2BTC profit or more in one day (which is acceptable for me)
Link of my short list of links is:
http://goo.gl/bRWa6q Hope this all helps
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Shane
http://www.wolftech.net.auBTC: 1EYadazzGU317MFtpg1JZtnwkafAZPd7Fz
LTC: LQWsQZncYij8rQHznwfq7TbvganJwNfMJb