This thread is a bit older, but i found it on Google looking for a similar solution and hope that i can help someone who is landing on this page too. One thing i've found is KeepKey, a simple Hardwarewallet for diffrent coins.
For now KeepKey supports Bitcoin, Testnet, Litecoin, Namecoin, Dogecoin, and Dash. I'm not shure if they will/can add more coins in the future.
Here is the link:
https://www.keepkey.com/

Looks verry intresting. I like the idea!
I have bought some too.