I like little tools like this.Could you manage a photo?
If we're doing Kim and Aggies top tips then here's mine. Occasionally, my water stops coming out of the brush due to an air lock.(probably due to sloshing while i'm driving). The solution was to diconect from the RO and suck, but to do this I had to dismantle the hoslock female.
So, my tip is I bought a hoslock male to male. Now I just plug this in and suck, problem solved in seconds.