Little free libraries are community book exchanges. You can take a book and/or leave a book. Little free libraries come in different shapes, sizes, and colours.
Books can be cumbersome when travelling so it's always nice to be able to leave one behind for other travellers or take a new one for future travels. Due to harsh winter conditions in Newfoundland and Labrador, little free libraries may be seasonal.
The Littliest Library geocache doesn't contain books--just a geocache. And it is seasonal--not winter friendly.