I just shared this on another thread, so thought i'd start a new one.
If you perform your own oil changes, i can highly recommend the "QuickValve"
.
It replaces the sump plug, and never needs to come off. (although they recommend changing the gasket every ten years!!!)
Picture:

You attach a tube to the nipple, and the other end in your chosen receptacle, and flip the switch!
Close it when empty, and attach the holding clip (optional), before refilling!
I liked it so much i now have them on both bikes and all 3 cars!
Ingenious idea! and for under £25 it is a no-brainer imho!
CHeck them out! and watch the video on the homepage. Customer service was also exemplary when i needed to contact them for a classic car of mine!
http://www.quickvalve.co.uk/
NB: I am not affiliated to this company so cannot take any responsibility for any experiences differing from my own.