I understand your reasoning. In this case, yes, Coinbase could be an easy way to set this up. You can set up your own wallets, but doing that for every crypto r

I understand your reasoning. In this case, yes, Coinbase could be an easy way to set this up. You can set up your own wallets, but doing that for every crypto requires you to download multiple clients and manage multiple key pairs so it becomes messy. If you want to try it, you can download so called "light" wallets that do not require the complete sync with the blockchain, which can otherwise take hours/days. I'm aware the Dogecoin client has a version with this light sync, and probably other cryptos too. Good luck!