There are million of things to do with Bitcoin, its like asking what are the things to do with money. Bitcoin is money which can be converted to any FIAT ( at least from here) then convert it and do whatever you wish to do with money with it. Buy house, get a car, go for that vacation. You can even store it although that could be risky but its possible.
Who says storing it is risky? It is not risky unless you don't know how to secure your money, it all depends on you if how much you can protect your things, if you are good at it then they are secure, so it is also good to be stored.
Yes, i agree.. storing bitcoins is more safe than investing it. All digital wallet have the security to protect our bitcoins so dont worry about it.