AS the topic says, how can one make some good amount with 30mBTC ( 0.03BTC)? Please just don't say gamble, try to provide some strategy. This topic can help others who want to make big with a small start.
In terms of gambling strategy - you can't turn that into any 'good amount' without taking massive risk. If it was possible, we'd all be rich.
I guess the best you could do is to learn how to play poker (learning costs nothing) and use that 0.03 to play cash games or tournaments. Alternatively, if you're good in analysing, you could try sports betting. So basically the types of gambling without fixed house edge, where you can improve your chances by improving your skills.
Outside of gambling, you could probably use that 0.03 to buy member/full member account and sign up for signature campaign, you should get your ROI within month or two.
And there's always good old "buy something cheap and sell with profit" method.
I wouldn't bother with investing in house edge or providing loans with such tiny amount.