Another favourite for all ages is Lego! Here’s a few ideas that can be done with Lego or Duplo (or megabloks too!)
50 ideas for Duplo – https://www.facebook.com/6665038402/posts/10157333793888403/?vh=e&d=n
Lego ideas – https://www.facebook.com/6665038402/posts/10157353757808403/?vh=e&d=n