I also repurposed some plastic drawer thingies for storing supplies and materials. I am sure it won't be enough, but hopefully I will be able to keep it to a minimum! I am trying to use a lot of what I already have - - lacing beads, latch board, stamps, craft items, small toys, etc. To find "a" items for the sensory tub, I just searched through the house - - little toys and things that I had on hand that could go in.
I am working on a "transportation" theme for Daniel's Tot Trays and Sensory Bins. He loves trains and cars. Inspired by Counting Coconuts, who used black beans and river rocks in the tub, I am not sure. I was thinking that I could probably color the rice brown or something. I could use some dry pinto beans for the rocks. I will probably put in some little cars, tires (Lego), helicopters, etc.) I was thinking of also **gulp** of providing a water tub to explore floating boats. Of course, this would have to be under supervision, and will probably teach clean up, as well. I found a vehicles stamp set (Melissa and Doug), some transportation 3 part cards (Montessori for Everyone) and a Vehicles matching set (Montessori Printshop). I also have the Do-A-Dot Art book for Trucks.
I think I am the one having too much fun!