Too bad you want a level. Otherwise I would recommend the "real thing". Back in the day Leica made small tripods for their own cameras. Here is a picture of a later one (only cosmetically different from the older ones). I always found that part of the enjoyment of using old LTM cameras was that it gave an excuse to also use some of Leica's own, sometimes, weird and wonderful accessories. The tripod's legs rotate when the locking screw is loosened, making the tripod able to be carried and stored in the demounted / collapsed / flat pack state. Everything is metal in these BTW though not too heavy but certainly strong.
You could always put one of those cheap bubble levels (as found on eBay) for mounting in accessory shoes on the 111's own accessory shoe unless you need it to help with framing by using an accessory finder.