Rainy days:Brassy Apple: DIY laser maze kids activity using crepe paper! You would be surprised how easily kids get in awe when u create a unique fun game at home for them.plus this saves you all the dollars you would be spending at the arcade.
Ein herbstliches Windlicht basteln - Basteln mit Kindern
How to keep a child busy for hours in the summer: DIY: Giant Ice Cube Awesomeness - filled with plastic animals, dinos, and such. And I'm sure you could put in food dye before its frozen to color it like the ice block in the photo.