This Christmas tree project can be displayed inside your home, or outside. I wanted a rustic look and used a pre-made wood panel for my project, but you could also use an artist stretched canvas if you want (but only for indoor use).
I also used some decorative wood trim (like you put around a window or door) and some artificial greenery. You can see all the supplies and the full directions on my blog.
The wood panel and materials can get pricey, but I was able to make this project for about $40 using coupons.