I know for sure that Dogecoin has such generators, you can even download the html to do it safely.
I don't remember which one I actually used and google.. just gives too many results on that. so just pick one you want

I have Dogecoin

I am basically trying to buy a bunch of alt-coins but I hate installing so many softwares and I don't want to hold my coins on exchanges. So a paper wallet is a very easy and simple solution but not all alt-coins have that. I plan to put as much as I can on Paper wallets and forget about them.