regarding underwear and cigars
Packing Note #1You are allowed to bring up to 3 lbs of gold and silver objects, a dozen pair of new gloves, and 100 cigars, duty-free.
A proper sojourn through Russia lasts 8 weeks.
Which means... that so as long as you can survive on 2 cigars per day & keep each pair of gloves clean for 5, all will be well.
(I suppose we could take an improper sojourn. That thought had not occurred until just now...)