An annoying problem with the APO is the silicone plug for the thermometer socket, which has a very tiny prong that is hard to insert (particularly when the oven is hot). Not to mention, some people have found that the plug breaks with use, and Anova can't provide a replacement.
Another thing I'd like to do is plug the two pipes in the back of the oven when I clean it using Easy-Off.
So I bought some silicon plugs off Amazon to solve these problems. Admittedly, not the cheapest solution in the world (a 40 plug bag!), but they are on sale at the moment for $9.93.