

I started with the edges, and then did row after row of tape with small pieces as spacers to keep the minis apart. The tape sticks really well on aluminium. It doesn't stick much on fingers, but once it touches the metal, it's hard to pull off without ripping the foam. Great stuff!
I placed my minis on the tray to see how far I could get until I ran out of space. This is a good idea to do, otherwise you might run out of room for your models. It also shows you where your minis might get into eachothers way. Weapons and such stick out, so you need to organize them so they will all fit.
I decided to put certain groups of monsters together so I could squeeze more models in the box. I also wanted a spot for my cards. I will eventually make three boxes for my cards, so I can place them all on the right. This is the result:
It's really nice to see rows and rows of minis, kept snugly in place, not sliding around when you pick up the tray. I made rows for HeroQuest minis, Mantic minis and D&D boardgame minis, as those have slightly different bases.
The tray fits easily in my wooden box, and I left some space on the right side for furniture. I could have put them on the tray as well, but I didn't have any more room for tape inbetween the furniture, and it's really the painted miniatures I was worried about in the first place.
I hope this is useful for those who want to make their own miniature storage box!