I installed a couple of drawers in the bottom cabinet because i didn't like not having any.
They are 18 inch models and fit perfectly inside the cabinet.
You do need to make something like i did on the pics to hold the railing of the drawers. Pretty simple to do if you know your way around wood.
They are item # 101.089.29 and you also need the faceplates item # 201.323.92
You could use other drawers but these have some shock absorbing system so when you close them they do it in a smoothly fashion. lol