Can you craft the non-set items in Team Fortress 2 for the December 2010 update ie the Boston basher the candy cane the back scratcher etc

yes.
Sandman + Tribalman's Shiv = Boston Basher
Scrap Metal + Southern Hospitality = Jag
Reclaimed Metal + Killing Gloves of Boxing = Fists of Steel
Chargin' Targe + Homewrecker = Claidheamh Mòr
Axtinguisher + Scotsman's Skullcutter = Back Scratcher
Kritzkrieg + Pain Train = Candy Cane