Prepare popcorn according to package directions. For easier handling, spread popped corn on sheet pans; let stand for 3-24 hours before using.
Double thread needle and tie a knot at end. Thread a kernel of popped corn onto needle followed by a cranberry (or any desired combination). Repeat until strand of thread is filled. Leave about 2 inches of thread and cut; knot end to secure strand.
Repeat until all the popcorn and cranberries are used. Drape strands on tree or in home for a festive decoration!