I think a little clarification is needed...I hope the paddling pool is empty. Little kiddie pools provide great playpens when empty.
I've let Brillo in the past hunt crickets in the bathtub. It's quite funny to see them get all hyped up to chase down a treat! ...but then you have to be okay with having live bugs in your tub, too.
He's not the best hunter, but what he lacks in skill he makes up for in enthusiasm!