$20k is a good amount for the following promising ICOs and Altcoins
ICOsElectroneum (ETN) - mobile mining and mass adoption (for general public to taste what cryptocurrency is like)
UTrust - payment mechanism like paypal and able to convert crypto to fiat
AltcoinsTenx (PAY) - making crypto spendable; promising roadmap; scalability upgrade; Asia debit card distribution; dividend
Status Network Token (SNT) - promising roadmap; mobile decentralize OS; dApps support; send ETH via message
HTML5 (HTMLCOIN) - 3 sats as for now; interesting roadmap; many interesting platforms
Zencash (ZEN)- secure masternodes; privacy transactions; a fork from Zclassic
NEO - 'The chinese Ethereum' (rebranding from Antshares); Neocontracts; dApps; dBFT consensus mechanism; superconducting transactions; NeoX-NeoQS-NeoFS
I have also made a list of potential coins here, maybe you can have a look.
https://bitcointalk.org/index.php?topic=2222435.0