We adore making Bookmarks and EAT fun to make and give. So many different designs for all seasons - with more to come (check back regularly! From Bunny Bookmarks for Easter, to Minion Bookmarks for Minion fans. I adore the Monster version too.
Animated timers that you can put on the projector. Gives students a visual for the time they have remaining. Plus a fun surprise (noise cue) when time is up! :) Sometimes kids just need the visual rather than a timer on a desk.
Too Noisy (free) -- Anyone who has attempted to keep the noise levels under control in a classroom will appreciate this simple, fun and engaging app which displays graphically the background noise level in a room in a fun and engaging way.