One thing I like almost better than deodorant is fresh underwear (old ones go into ziploc bag that held my wipes ;-)

As for clothing - there are lots of other posts about what people like to wear on long haul flights. Mine depends on climate (at home and at destination) but typically it's some variation of a ponte knit pant (not a legging) with a cotton shirt, cardigan & scarf. I bring slippers for the plane (I'm not flying business class, so I have to bring my own) and wear my bulkiest shoes/boots.