On this website you can purchase Bananagrams as well as a range of other reasonably priced games to keep your kids busy. There are also competitions for keen students to participate in and I have worked in schools where Bananagrams has been offered as an after school club.
Whilst this program has been designed to use as an actual lesson, you can use some of the activities during rainy recess breaks or lunch breaks. Many pupils tend to go 'stir crazy' if they don't release a little energy, so these routines are perfect to let off a little steam to ensure you can still get the most out of your students during afternoon lessons.
A little monetary investment required, but it's totally worth it! Perfect for a little competition with others, or trying to better your own time, you won't be able to resist getting involved too. Check out the videos to see how impressive speed stacking can be! You might like to try getting your kids to make their own speed stack set, that way everyone can play.
These games are perfect to fill in a little time, especially if the last few minutes of recess have been rained out! Many are low key and can be played for longer than ten minutes should the need be there item poor weather persists!