I think you’ll find those are mug holders, thank you very much.
Klunk* maybe they think that doing this at the end would be very frustrating when all anyone will want to see is it running, not the fiddly crappy stuff that make a for a properly completed project.
It’s getting bloody close to being finished! (maybe)
* Also I think Mr Blackhurst has very little time for doing things they way the ‘everyone else’ expects stuff to be done