You want a stand on the Hilversum market. You need a market permit for this. You can also occasionally get a stand on the market (day permit). Call the market master at 06 51 21 51 25 on Tuesday or Friday between 14:30 and 15:30 hours. You will then hear if there is space the next day.
You arrange or rent a stall yourself.
See the possible costs on Hilversum.nl.