I'm not sure if can help but i noticed that there is EvilCoin which at least on Yobit have weaks sell walls (which just to tell my point of view about all this, could even be broken in less then 24 hours) and there could be a easy profit if even the buy walls will increase but at the end. Then there could be Pandacoin (even if to say the truth, i don't think that can help) which in the last period is trying so hard to destroy that 1sat sell wall that is huge with making another coin which can be bought by swapping Pandacoin, if it goes well maybe there can be some kind of return (even without doing any stake) but i don't know, at the end is just a suggestion and nothing more