Accessory Tray for Bandai BB-8 & R2-D2

I assembled the Bandai 1/12 scale BB-8 & R2-D2 kit over the weekend and found that all of the little extra panels and tools would be very easy to lose, so I designed this organizer for them. For fun, I made the outline in the shape of the two droids.
I think the casting for R2 are the same ones from the earlier R2-D2 & R5-D4 kit, so if you have that you may be able to modify this to work with that.