I cannot store many altcoins with trezor or ledger nano s.what is the solution to store coins for long term that are not supported to trezor or ledger?
MyEtherWallet was the most popular altcoins wallet which is an ERC20 compatible to support all tokens. Use this wallet specially if there are more coming new coins and tokens from your new investments or campaigns but better you will use the wallet provided by your chosen exchanges so that you could do trading instantly reducing transaction fees which is required every time you need to transfer your coins from wallet to exchanges.