3 for 2: choose well

The dilemma: the PoV is released this week in pocket paperback format and will be available in the '3 for 2' offer at Waterstones.

But if you get your mum and dad a copy each, what to do with the third one? Oh, the choice, I hear you cry through cyber-hell. Oh, the dilemma of variety. Oh, the onus of selection... whatever. Well, some ideas:

1) a sacred text as the basis for a polygamous cult in a Norfolk enclave
2) slip inside a Mills&Boon cover and give it to your gran
3) give to that guy in the tight trousers who smiles at you in the tube
4) a fire-lighter for a sacrificial pyre in your back-garden
5) grind down with extract of thyme and use as a cure for baldness
6) douse in petrol and hurl through a library window
7) reading

Any other suggestions, write them on the back of a copy of the book and send them to my enclave in Norfolk.