I made these on a lazy Saturday morning a few weeks ago. A close friend of mine always prepares an assortment (cheerios, milo balls, peanut butter balls, honey stars, etc.) whenever she holds little gatherings with friends or family. Usually, she gets the really long sticks, probably around 25cm or so. She buys her long sticks from Market Place and some NTUCs.
For mine, I use the shorter sticks (butter flavoured) from Daiso. They are really easy to make and both kids and adults love them. I used peanut butter to "glue" the frosties to the plain biscuits. You can also use chocolate spread, e.g. Nutella if you prefer.