Have comfortable loose-fitting clothing handy, a good pair of cozy slippers to get your feet into, rather than bending all about trying to get socks on.

.......hmmmm what else..... WASH your hair really really good right before the procedure, so you can afford to go a couple days without feeling 'yucky'. After that, have someone help you, or use a spray nozzle while you stand over the sink....
Having baby wipes handy can really help to 'freshen up'

more ideas will come I'm sure.....

Rae