We use an old airline hose from the aquarium similarly! Works great! Anything small enough to fit through the hole and manuver around! It's a permanent part of Uglybator for us, after learning the hard way we needed it!I have been using a bendy straw to add my additional water since I'm in lick down. You could add a wash cloth and drip water on it as need.
"Hey the Humidity is too low"
"well we're not supposed to open we're on lockdown"
"let try [insert every possible crazy idea here]"
"craaaaaap you are spilling water everywhere!"
"gah this is ridiculous! next time we are doing something different!"