Mini-ovens are portable, so you can literally keep them anywhere. The usual placements include countertop, shelf, drawers, or even the appliance cart will be fine. You can fetch the oven from the cart to work and then keep it back. Your small kitchen will remain organised this way. But if you want to fix it somewhere, wall fittings can work. You can simply find a corner and affix the same. Mini-ovens are not that of trouble when it comes to placements.