It's always a matter of style, of course you can just hang them upside down, but the space should be very well ventilated. You can also cut them into branches and let them dry without removing the sugar leaves... the thing is always to keep an eye on how they're doing. I remove all fan leaves and do a rough precut, and I often hang them on the drying rack in the living room. A cardboard box can also be converted into a drying chamber, just pull some strings, etc., and hang them in there... but always make sure they dry well. I made a few diaries with tutorials, just check there; the diary is called "banannas in/outdoor + tutorials," where I explain exactly how to dry them.