have no idea the name of the shops...in sham shui po, if you stand with your back to dragon centre, you walk to your left.... across the street, and down past golden centre. you just continue down that road and the shops are on the right side of the road. i think it is fuk wing street.or fuk wah street.
in wanchai, you head away from southorn playground, down the market street. the shops are on your left, behind the stalls.
but in both cases, the areas deserve a little exploration. you'd be amazed at the things you can get.
there is another shop in sham shui po where i get sets of stickers for $2!
also in sham shui po, in the same shops you find the small disney toys, you can get awesome stuff for the loot bags. i put in each bag: a set of rubbers, a set of pencil crayons, a pack of stickers, a bouncy ball, a disney character and each bag came to about $10-12!!! the kids LOVED their goodies!