The Ledger Nano S, now has the ability to store Ether. It's cost is small 58 euros, or about $65 without shiupping.
The Nano S stores your Ether offline in a secure environment. To make a spending Ether transaction, the device signs your transactions and transmits it to your computer. With it's built in screen, you can verify all those transactions on the Nano S.
Even if your computer is hacked, your S’s screen will remain secure and verifies that the address and amount you’re sending are correct.
See more how-to 's for wallets: