Finally put together one of the kits from massdrop! Thought I'd share a few pics.
After much deliberation, I decided to put the LEDs into the case, in the top right of the right hand side
I'm really happy with the way it worked out
. Used some nice brad point bits to drill out these holes. You could do it with regular bits, but you'd have to be much more careful to get the holes as clean. A few turns (maybe 3) of a countersink bit by hand on the top , and then maybe 3 times that many on the bottom (to lessen the thickness just slightly) made
these bezels fit perfectly. I got the flat LEDs from the same place (they're really bright though at 20mA; I'm giving them much less, using 10kΩ resistors).
EDIT: Forgot to mention: In order to have space for this, you must solder the Teensy to the PCB without spacers in between, only a thin sheet of some insulating material (my Dad gave me a piece of kevlar tape, I think it was, to use). This is kind of a pain, since you still have to solder the pins to both the top of the Teensy and the bottom of the PCB, but I can't think of a good workaround. Everything appears to work just fine, but I haven't tested it extensively. Also, I chose to solder the resistors to the underside of the pins where the LEDs would normally go, and the leads of the LEDs to the resistors' pins (as someone suggested a while back).
I really like Litster's case in clear acrylic, dust, scratches, etc., not withstanding. Looks much better in person, IMHO, haven't seen a picture yet (including this one, lol) that does it justice :-)
I countersunk all the holes, top and bottom. Not perfectly clean... but I'm happy. With practice (on a spare sheet of acrylic that I got just for this reason), it's not too difficult to do it without cracking the plate or melting the hole.
Still need to do something with the bottom though... I planned to bevel the nuts and grind off the bolts a little, but I couldn't get it right when I tried tonight. Leaving to visit my grandparents for the rest of the summer tomorrow, so it'll have to wait till I get back.