Like "Why not do a scaled down version. Just one room decorate the windows or tables. Put garland over the doorways. You could make it very festive without putting up a tree. Hang some of the ornaments from the garland. If you made stockings or have them put them up. Since you have so many homemade ones find different ways to use them. Put some in a bowl on the table. Or arrange in a circle and put a candle in the middle. If you have bookshelves put some of the shelves. I think you will find if you start to decorate, you will get inspired to come up with ideas instead of putting up a whole tree."