>>95947178
>https://www.aliexpress.com/item/1005007850747021.html
unless you want to get into custom expensive stuff look for something like this, the foam is precut into 'pixels' that you can break off to make the general shape or your models, it's a destructive process so the shape you break off is the one you get, you can't later restore it to make another one
they usually have a thin full layer of foam at the bottom, the pixel matrix and another layer on the lid

picrel is from aliexpress