Pi3 Stacking Tray accessories

UPDATE 5/4/2018 - I've added several more versions of each label. I fixed the fan mount and added an offset fan mount. The offset fan mount will better cover 3 Pis.

ORIGINAL -
I liked the design of the Raspberry Pi Stackable Tray but thought a couple additions would be nice:

1. Half width label that mounts on a single stacking post. After printing, you might need to sand the interior a bit to get it to slip onto the post. The fit is very tight.
2. Full width label that mounts on the stacking posts.
3. An 80mm fan mount on the side of 3 stacking trays. I would suggest getting a USB powered fan.
4. A top/lid/cap for the stack. Just to make it look tidy.

I've tested 1, 2, and 4. I haven't tested 3 yet, but I think it should work.