Upper Left: Paper towel stacking. Count how many you can stack.
Upper Right: Lid toss. Get a bucket and toss tupperware lids in it. Count how many you make. Could make it into a competition (for the competitive-type people like myself).
Pictured above: Up and away. Put a small fan facing toward the ceiling and throw plastic grocery bags into the fan wind and watch them fly.
Pictured above: Spray bottle target practice. Make a target out of paper and fill up a spray bottle. Set the sprayer to spray a streaming line.