peppermint bark is an American chocolate Christmas thing which is fabulous, and I can't believe it hasn't come over! I melt Valrhona dark choc and spread it on a cookie sheet covered with greaseproof paper. Let it harden, then melt white chocolate and pour on top for a second layer. Whilebstll soft, liberally sprinkle smashed up peppermint candy canes. Let cool and break into large chunks. I make huge quantities of this, and it disappears very quickly.
homemade hot chocolate mix: in a food processor, mix up about a pound and a half of chopped up Valrhona dark chocolate and half a pound of Valrhona milk chocolate until finely mixed. Whisk in 2cups of cocoa and 2 cups of vanilla sugar (made with caster sugar and 2 deseeded vanilla beans and pods which macerate overnight). You can jazz it up with spices (cardamon, cinnamon, nutmeg, chili - whatever you fancy). It truly does beat commercial products, and is easy to make.
truffles are really easy - just a ganache (chocolate melted in cream then cooled) flavoured in whatever way you want, then rolled or dipped in something else. A simple one is to just make a dark chocolate one and roll in cocoa. Another idea is a gingerbread one where you make the ganache with a mixture of dark and white choc, and the cream is seeped in spices(ginger, cloves, allspice, cinnamon, and treacle), then dipped into melted dark choc. I've done white chocolate ones flavoured with jasmine tea which worked well. The process is messy, but not difficult. Do you need more specifics? I'm lying in bed with the iPad, and can't be arced to get up to get the recipe for the ganache, but will post it tomorrow.