My 1 year old daughter loves to empty boxes and containers out and sit in them! One day the kids were throwing balls into a crate she had emptied & Baby Sister decided it would be more fun to sit in it. This, of course, upset Big Brother. To turn his attention away from being mad at her, I had him place the balls in around her. We collected all the balls as well as alphabet blocks from around our home & buried Baby Sister with them.
They both thought this was hilarious! Not only did this make a great sibling activity & distract him from being upset, it made a fun sensory activity for Baby Sister. There were hard & soft balls, bumpy, smooth, noisy, all different sizes, & even one that lights up with a song & shakes practically right out of her teeny hands!