We have a magnet based hanging system called Phlib, or you could use a cable hanging system or wire clothesline.

I know this is probably too late but if you are still looking there are often vintage live edge coffee tables on auction sites that could be upcycled as vanity counters.

The tv in our spare room is mounted on a bracket on the wall where the tv can be tilted whichever way you wish. We got it from Argos and our electrician fitted it whilst he was re-wiring the house, so very tidy. Would buying a smaller tv be an option as your tv is a bit too big for the space?

I would try to get offcut pieces of quartz if possible. If it is not then white marble or granite or if your installer is an excellent cutter then you could get very large porcelain tiles 1200x900 and cut them to suit. Not sure of your dimesions though. I did this for a bathroom windowsill and it looked great. Forget "not normal" some people have to be trailblazers...