I do have a sensory tub button to the right side of the screen, However, it is for a different link. I think they do link ups and that is why there are several with sensory tubs out there. :) None the less, If I run across more I will link them together in the Special Needs DropBox I am putting together, I will have some sensory processing, fine motor skill links in with this dropbox. I will also let you know when it is up.
Here is a great site with a lot of Sensory Tub Ideas: