Slot-in picture frame: for your three-masterpieces-a-day genius

Masterpieces are coming thick and fast from my daughter at the moment, and every day, her latest work supersedes the last. The folk at Letterbox must know the problem, because they've come up with this nifty wooden frame, which allows you to slot pictures in and out as easy as pie.

It also comes in a single version, which might be easier if you have a mixture of landscape and portrait works coming into the house.