Day 138: Marble Run Water Play (fail -- although fun).

Pinterest pin and website link.

This looked so fun, but ended up not working out so well -- we moved the water table inside on a rainy day (with a tarp / towels underneath) and built up the marble run to sit inside the water table.  

Although my daughter played with it for a long time, my son quickly tired of the marbles not moving along as well in water as they normally do without water.  It may have also had something to do with the water table not being completely even (my engineer husband tried to fix it), but the marbles consistently got stuck halfway down the run due to water resistance.

Verdict: FAIL.