£5 on a book

Small things can sometimes make you happy and make you look forward to even the most mundane event. Such as my next trip to the local bookshop. I went there shortly before Christmas, bought only one small book, but since I am a regular customer, I had earned enough loyalty points for a new five pounds voucher. Now that means I have a new aim: to find a book to purchase with this voucher. I will need to spend time there, but until then your suggestions in the comment section are more than welcome.