While on the go or at home the following products may be of assistance if you have limited mobility.
Travel John Deluxe Unixes Personal Urinals
http://www.site2shop.com/shoptv/stv-3206.html
The Murrette
http://www.murrette.com/
Freshette
http://www.freshette.com/
The Whizzy
http://www.whizzy4you.com/
LaFemme
www.Space4less.com/usr/lafemme
TravelMate
http://www.restrooms.org/device-assist.html
OnTheGo
http://www.pintsize.com/onthego.html