My kids want to sell their stuff for charity, where could they do it?

[movingeast]

My kids are 6 and 9 and have been gathering stuff to sell to raise money for charity.

We don't have many families on our street, but we have a space in front of our house where we could sell stuff.

Question - do we put up lots of ads for people to come to our street, or can anyone suggest a place with better footfall where we can sell without upsetting the council or doing anything illegal?

We are about 5-7 min walk from north cross road.

they are really excited, so it would great if I could help them to have a successful sale!!