I bought a half tree for my oldest sons bedroom when he was in primary school.
He's now in his thirties & my youngest has the tree in his room for December.
It's a 4ft tree & can be hung on the wall (complete with half a basket base & if you want you can stand it on a tabletop or the floor.
They've been around for at least 20+ years that I know of.
It looks brilliant when decorated & doesn't really take up all that much space, plus after Christmas I just take it off the wall, drop the plug for the lights into the basket along with the star from the top & squash it back into it's box with all the decs on it.