The next one is MINERAL, VEGETABLE, and ABSTRACT.
To recap and give a nudge into a more fruitful path: it's a container of things made of wood and metal, which features in a well-known simile, and which could be found in various places, including the home.
There are four words, including the indefinite article.
The next is A B S T R A C T.
*BUT clarification (as always): Whilst I say there are no moving parts, one element of the object will move if the item is utilised...