Here's a fun way to turn your windowsill into a Science Lab Station for your kids playroom. I drilled holes into a piece of wood that were the same diameter as the test tubes. I suspended the slat of wood by cutting down two small slats to support it on each side of the windowsill frame. Now the kids have a dedicated area for all their science experiments. As a bonus, it adds to the decor of the room! More importantly, it offers spontaneous play. Instead of having the test tubes stored in cabinets, they are out in plain sight and inspire the kids daily to create fun concoctions.