My wife showed me a picture of a similar tray, but I couldn't find the origin, so I designed one myself.

It is meant to have three large trays. The bottom one is the biggest. The middle and the top ones are a bit smaller, but can have an insert which goes through the top one and sits in the middle one. I made two inserts, one is divided and one is not. You could also not print it at all and use the space as it is. You can obviously stack it in a different way to if you like so.