technically you can install all the desktop wallets on an offline computer to generate a bitcoin address/private key and send your bitcoins to that bitcoin address. and as long as you 1) downloaded the correct program and not a malicious one and 2) keep that computer offline and free of any malicious programs your coins are safe.

trezor that was suggested to you is good only if you have a lot of bitcoin and if you are willing to spend $100 for a bitcoin wallet.