Bounties with BTC reward is the thing of past when price of BTC was not that high and also trasaction fees were low. Now bounties are only in altcoins (from more valuable ETH sometimes).
Sorry but i know that there are, until some week ago i've received 0.007 per week from United Traders Bounty, and also now there are other BTC reward campaign but many full. So, there are, but are few. If i will find some of this i will post here.