[Lack of HP]

I hope I am putting this in the right place so here goes, have not used the convection oven that much. Trying to get rid of so many cooking items in the storage area. What does everyone use that would work in the convection/microwave without having 2 of everything. Convection is new to me in the Monty so trying to re-stock with the proper items.
Thanks for any advice in advance. Joe