or maybe you can make some "buy and sell" with high skill sector (like stamps, coins, medals etc) and try to get some returns in shorts times.
Invest in signature campaign is really low risk investment
Most of signature campaigns in Bitcointalk are trusted and good payment
investing in an account to join sig campaign is quite risk friendly indeed. but the payouts are quite small unless you're a very active poster. some people make hundreds of posts per week which is insane.
I would not "invest" in a account by buying it. I would invest time and get raise up a account. Payout's vary but full member and over are decent. If you look here there are many options - https://bitcointalksearch.org/topic/overview-of-bitcointalk-signature-ad-campaigns-last-update-01-jan-23-615953
The payouts do beat faucets. And it's posting is something you would do anyways. But do make sure not to let quality fall down of posts. They need some content, if not your just spamming.
I know, 'investing' in an account is so weird. I can barely call it investing.
Something about the ethical issues.
And yeah doing sig campaigns is better than faucets but the income stream is still not gigantic. There are better income streams that you can leverage with your Bitcoins.