I had a candy buffet for my daughter's sweet sixteen party last year. (the party theme was candy). We used Chinese food containers for the guests to hold the candy.
One suggestion I would make is to google "candy buffet" because I got a lot of pictures which gave me good ideas! One thing I did was to make "levels"-I had to use a six foot long banquet table for the buffet. So I put it against the wall and placed little plastic crates/boxes along the back, then covered everything with the tablecloth. This made a better display and was easier for the guests to reach the back level. I had three of the large margarita glasses and I placed them in the center of the back row.
I like the tulle like the prior poster showed but instead of that I wove a strand of white christmas lights through the buffet!
I got clear plastic scoops at the dollar store-a set of three in graduated sizes for just $1! At the end I wanted to add a few extra containers so I picked up clear plastic bowls at the dollar store-they looked fine even though the rest were glass.
The guests loved the buffet! Now since I still have all the supplies I volunteered to make one for my nephew's graduation party next month.