For on top of the magnetic stirrer I use a stainless steel one gallon 'beaker'. I have some SS quart beakers, but they are not easy to measure stuff with -- it is nice to be able to see thru one's graduate. But they last!

We have some SS trays that we have been using continously for 40+ years (8am to midnight everyday except summer/xmas holidays)...student-tough!

Vaughn