@Roberta,
That Mikey!!!
Sebastian will, I swear, jump into the bath and stay one day.
He adores running water....toilet, bath, shower, dishes, hand basin...runs from anywhere in the house. Drinks water as it runs, plays with it, gets in hand basin with it as I clean my teeth or hands....hair washing days are bliss.
Viola getting more and more interested too.
Mine love their cat towers. I will be getting them one of these in a bit: