Paper wallets are easy to make and relatively easy to use. Slightly harder to spend money with. I suppose someone could customize a small Linux live CD to boot

Paper wallets are easy to make and relatively easy to use. Slightly harder to spend money with. I suppose someone could customize a small Linux live CD to boot, not touch the hard drives, load an encrypted wallet off a secure jump drive and encourage backups. It's fairly straightforward if you use a dm-crypted jumpdrive and, say for example, Tails.