Sharing a little idea

Last week , I was brushing down my group head and wanted to give it a little cleansing flush but I wasn't paying much attention to what I was doing ( plus my hands were wet)
I gave the lever little pull, and next thing you know , it slipped at about the 30° angle , BOP, my drip tray jumped out , my cups were all in a mess and my whole neighborhood heard it .

So I went and bought these "tennis racket silicon rings"


They look like this


Pretty grippy, gives the handle a chunkier feel too.