Here is a quick video showing off a 15$ android phone that is acting as a cold storage device.
All you will need is an android phone that is used for NOTHING else
A micro sd card USED FOR NOTHING ELSE
and to download a copy of a bitcoin wallet APK ( I chose mycelium here
You can sweep the funds in a couple of ways, the easiest would be connect to a secure wifi and send the funds to your main wallet. You can also use another wallet with sweep feature or just use the private keys directly.