author's note: Unfortunately, I really have no idea about any Christmas decorations and what the can/can't do, nor their variety. My family hasn't ever been the type to do much. :l
Months of Bills
Stiles had thought of many things that Derek apparently needed for the holiday.
They included a tree, new lights, an entire Santa and reindeer set to go atop the roof, yard decorations, and even light-up candy canes to surround the house. He paid no heed to the complaints that the werewolf wanted to remain inconspicuous, he enjoyed dark and simple things, and he really didn't want to celebrate Christmas. When the teen decided on something, he would do it, not bothering to listen to the objections (unless he was telling Derek that he was far too much like the Grinch).
The only thing Stiles didn't seem to think of, however, was the fact that all of this stuff had to be paid for, and he had promised to pay three-fourths of the final amount because it had been his idea in the first place. The realization that it would be months before it was all done with was something that almost made him regret his decision.
But not quite; the look on the werewolf's face when the Santa started singing one of the many Christmas songs programmed into him was priceless.