This is the time of year that my boys get "spring fever". They can't wait for baseball season to start, but it is too wet and cold to play it outside. So...we created indoor baseball with a balloon and a soft baseball bat. It is especially good for my 4-year-old. It has really helped him work on his batting stance and how to keep his eye on the "ball". Even my 1 1/2-year-old has started taking swings with the bat. We all take turns being the pitcher and outfielders. It really is a fun family game.
(They haven't broken anything, and they have played a lot of games. The balloon really is harmless.)