None. Most of the ICOs these days are more likely to be just pump and dump(shitcoin). Take advantage of that. Or beter participate on IEOs. IEO is the new ICO. I think this is the quickest way to make money. Also it's more safe than ICOs since it's backed by exchange. If you really want mineable cryptocurrency, stick to Bitcoin or well-known cryptocurrencies like ZCASH, XMR and ETH. These are mineable with GPUs exept BTC.