Our DIY sensory bin table began long ago, at least the idea of it did. Shortly after I started sensory bins with Bitty I got the grand idea to make a sensory table for the back porch. The idea was always for it to be outside. She would have her smaller indoor tray and then the large table outside. It also served as a way to avoid having both a sandbox and a water table for her to play in as the sensory table could do both!