I use tubs from Home Depot (you can see them under the table) and cheap hard-sided gun cases. Some of the larger items break down for transport.
That is a Roomba with a claymore. It was a meme for a while, and one day I realized I had everything I needed to make one. I'd love to convert the Roomba to R/C, but it's an older one and I'd wind up having to completely gut it.