One can make this with bounties, but this is also bound to a lot of work, so maybe just working a normals dayjob and converting some of that money into BTC will be the best choice. I dont think that there are easy ways that give you a passive income of 0.1 BTC per week. But if you are creative there certainly are such opportunities.
Bounty is not a good way to make money unless you are a cheater. and no one likes cheater. THey are destroying the forum. Bitcointalk is now full of spammers and griefers. Hope that bitcointalk will become the same in the past where it was a place for bitcoiners to discuss about different topics