How can I deal with standing for long periods?
I have an odd sensation, like pins and needles
The technical name for that kind of altered sensation is paraesthesia. It can have a number of causes; so much so that if you are getting this and it's bothering you the usual response applies: go and seek medical advice.
On the other hand, if you are still a bit ...
Veins pop out when the muscles are strained.
Muscle builders try to get them popping out with constraining the blood flow by tying something to their arms. The compression socks and pantyhose may work in a similar way.
Aren't you in luck, I asked a very similar question over in physical fitness SE:
Here is the top answer:
A recent meta-analysis of 23 published studies is MacEwen, MacDonald,
and Burr, "A systematic review of standing and treadmill desks in the