There are multiple ways people can store bitcoins offline, using either a paper wallet or hardware options from companies like Trezor, Opendime, Ledger, and Keepkey. However, bitcoin users can also create a bitcoin wallet on a far cheaper USB thumb drive as well to store coins offline.
how? Any more details?
Not true! Don't spread misinformation! The bitcoin blockchain's gonna take around 200 Gb of disk space for cold storage.