I just spoke with Thermos folks at 1-800-831-9242 and ordered parts. Since the gaskets and fold-able spoons were $1 each and postage was $3 for orders up to $5, I ordered two gaskets and two spoons. Total order was $7,
I believe BPA is a chemical in plastics. The thermos interior is stainless steel so that wouldn't be a problem. I'm not sure about the lid and the cap. Our elementary children as young as first grade do not have trouble opening them but we make sure not to over tighten.