I pinned this idea last year and made it this year for Christmas gifts.
(**for 1 pint jars**)
1/2 cup powdered milk
1/2 cup unsweetened cocoa powder
1/2 cup sugar
1/4 tsp. salt
1/4 cup miniature chocolate chips
1/4 cup crushed peppermint (I used starmints, could also use actual candy canes.)
Layer ingredients as you wish in a pint size jar. To make hot chocolate, mix all ingredients in a bowl, add 1/3 cup of cocoa mixture to warm milk (we tested it with water and milk was much better...yes, even though powdered milk is an ingredient).
Sip and enjoy!
PS - Last year my sister-in-law gifted us with homemade vanilla, similar idea can be found here.