Not that we have rainy days in Dubai, but maybe great for too-hot-summer-days. fun-for-kids-rainy-day-crafts-activities-
Lego Spoon Race: Plastic spoons, Tupperware, and Lego bricks are all you need for this fun game.
I'd like to try these with craft foam to make diy "nerf" shuriken. Original website is German.
DIY lego ninja birthday cups to fill with candy