Cuts, I am embarressed to say, but I will anyway
I use one of those kitty litter containers. The clumping kind. It has a wide mouth and I decorated it with a marker pen with all the branding iron brands I could think of.
I am thinking of building a new cart, if I can find someone to buy my new 3 wheeled cart. I will incorporate a catch all box like Papa Bear has. With the lid open he has it set up to reload remington cylinders and has all his supplies right there at hand. It is big enough that he can use a big peanut butter jar with his water/soap in it. It also has a very wide mouth. His is the most convienient cart for a BP shooter I have seen to date. Also, he has a full wood shop in his garage and he would let me use his tools to make a good one up, but first I need to sell my new one. It just isn't right for me. There isn't enough space to store all I need for BP.
BTW, I use a dash simple green and water and my brass looks pretty good, even though I use a lot of CleanShot.