This paper airplane will loop if folded right. I know in my video it didn't fly as good as you would think, but with some proper tweeking, it will make a big loop. Or adjust it by making elevators in the back of it to make it do smaller loops.
by Tuteate
by Crazy Crafty Creator
by Creative Paper
by Hello Pixel Art
by Beadaholique
by Knotty Threadz
by Liz Larson