If you are looking for unique items for your Bat/Bar mitzvah, a visit to Etsy is a must. If you haven't heard of it, it is a website of independent artists and crafters, selling all sorts of unique items you can't find in stores. Think of it as one giant craft fair! Since these are handcrafted items by independent artists, many of these items can be custom ordered. Also contact the artists directly for potential discounts for bulk orders. Here are the items I found relating to a candy-themed Bar/Bat Mitzvah:

Candy resin necklace $20 from StoopidGerl

Candy sprinkle rings $15 from StoopidGerl

Candy bar necklace $10 from Crazy Girl Boutique 

 Candy Sprinkle Necklace $15 at Resinated Goods

Lollipop Keychain $10.00 from CherryBoop

Butterfinger earrings $2.00 from Kitschkween 

Skittles Purse $32.00 from  SweetPurses

Nestle Crunch Bar Earrings $7.00 from Shannonsroom

Candy Wrapper Wallet $12.50 from Duct On You