I have done some bounty campaigns that were unsuccessful.. Also some were scams. But I have received some tokens from few of that projects. So I need to know this, Is there any opportunity that can I use this tokens? 
Sure there is) Wait for the bull market and watch them. Is there any pumps there? Then sell this crap and go buy yourself something)
Still no pumps? Just wait further. Or sell half of your tokens - half of each type. And leave the other half for a year)