Thanks for sharing. I have been saving a canister of cornmeal that tastes off, figuring it could be used for sensory play. I think I will try that instead of WW flour. Also, I followed the link for cloud dough, and that's a great idea for using up the bag of bleached AP flour that ended up in my pantry.
I would rather DS eat flour and vegetable oil than sand. Sand contains particles of silica and asbestos (both carcinogens) so when/if the dust is inhaled, it can be very dangerous. But to each his own.
Re: Just found this!! Toddler safe "sand"
This does look cheaper than buying sand, though. I might try it out in a sensory bin.