I have Litecoin, Bitcoin, Ethereum and NEM. In recent times, I've become a very lucky boy indeed!
I usually download and install the "official" wallets that download the entire blockchain but this is getting impossible now, especially for Ethereum Mist wallet which just plays up all the time causing me to delete chain data and force a so-called "fast sync".
If you were in my position, having this very large amount of coins, how would you go about storing/protecting them? For each of the above which wallets would you use and how would you split things so as to not put everything in one basket?