About a year ago we purchased some test t-shirt for our employees from Pooblika. They designed and produced t-short "Let's pizza for Moscow!" and we were satisfied with quality, price and time.
Firstly, merch motivates employees and also people like receiving t-shirts
and caps with company symbols as gifts. Secondly, such clothing makes the most loyal client "ambassadors of the brand" - they are ready to buy souvenirs and saying t-shirts.