You know from past posts that I'm a sucker for a bargain. Yesterday I came across a clearance bin with thousands of these Tupperware style ice cube trays with a tightly fitting lid.
Paint stored in the fridge can be isolated from food with confidence.
A cotton wad with a few drops of clove oil in one of the cubes will assist with longevity.
Looks pretty easy to clean with rounded corners and edges.
The mfr is MSC of Montreal, Canada and made in China.