Learning Music in the strangest places

Trying to make learning music fun can be difficult, but games are a good start.  I like to try to find opportunities any place to experiment with gamification of music theory.  While my kids were swimming, I used some masking tape to set up a staff on a brick wall as shown below.

Five lines represent the staff and the mortar/bricks above and below the staff help to identify the lines (mortar) and spaces (bricks) outside of the staff.  I used a different colored tape (duct tape) cut into a circle to act as the note.  I then move the note to different positions and the kids needed to call out the note (in solfege or as letter note) within 3 seconds or else dive to the bottom of the pool.
Lots of fun