Love this idea! I found this one at Urban Outfitters' blog:
U.O. put pinned or taped their lights and decorations directly to the wall. For renters, though, this might not work so well. What I'm thinking is that it would be easy enough to draw a tree on a large sheet of paper or tape several sheets of paper together and then decorate the seams, or cut a tree shape from corrugated cardboard and maybe cover in cloth -- something that could be taped to the wall and taken down with no damage to or holes (no matter how tiny) put in the wall. Up it goes, and decorate away.
I found this Christmas made out of pillows at World Inside Pictures blog (22 Unusual Clever DIY Christmas Tree Ideas). Unfortunately, it linked to a website written in French, but not to the specific post at the website, and I was not able to find it -- so, cite with caution, because I found the same image at several different websites, none of which appear to be the original source and all in different foreign languages:
As a book fanatic, LOVE this bookshelf tree from Swiss Miss -- so clever:
I found another clever use of books or thick catalogs (are there still such things -- I grew up ooohing and aaahing every year over fat catalogs from Sears, Spiegel and J.C. Penney!) at Lush Home, along with several interesting ideas for creating Christmas "trees:"
I found this tree at Organized Clutter blog via Pinterest. With all the unsolicited junk mail I receive, I'd have enough to make a very BIG tree in practically no time at all, and wouldn't have to commit the ultimate sacrilege of tearing a book apart:
July 16, 2017:
Hola! Where does the time go, Geez Louise! Half summer is already gone, and I am first now updating this from last December, tsk tsk. Bad Jan! So, been busy puttering around the yard, as always, and paying more attention than I probably should be to politics. The kitchen "remodel" is on hold due to budgetary constraints, but I hope to have that remedied before the end of the year. And I have yet to paint the guest room - it's only been 3 years now since I moved in to this version of Maison Newton, I'm not lazy or anything, nope... LOL! Take care and have a great rest of the summer. Jan