Home Bargains are selling the Disney Doc McStuffins Peel & Stick pack for just 59p. My daughter loves it and has been playing with it since this morning. Ideal for a wet half term day. The stickers are reusable and can be stuck down on the outdoor scene provided in the pack.
I found this in the Kingsteignton store who had plenty. This is probably nationwide though. They sell for around £4.99 on ebay and for a lot more on Amazon.
If you have bored kids this may entertain them for a bit!