Mark asked about suggestions for painting palettes, etc. w/children. I
wanted to mention a source for "stuff" of all types: Creative Educational
Surplus, 1-800-886-6428, The current catalog from this co. has many types
of small bottles, boxes and trays -- some with lids, that might be useful.
These are all pretty inexpensive. I have no connection w/this company
other than to have ordered some of the surplus items for various classes
and have been pleased w/the products.