Get a leash on them (harness) soon. And put them in a bath tub and let the water fill up.
Well, I'm still debating the harness. I know they love outside walks, but I've also heard that once they taste outside, they'll be crying quite often to GO outside. So it's just something about which I'll need to think.
There's that and the idea of trying to walk TWO of them...by myself (a leash in each hand) could be nerve-wracking.