Universal Power Adaptor

Lost my laptop's power adaptor (I'm sure I packed it, but when I get home, nowhere to be found) so need a new one. A friend was telling me about a universal power adaptor which you can buy with interchangable tips for different laptops/chargers/mobile phones etc. etc.

Does anyone have one? If so, where did you get it, how much did you pay, is it any good?

And I just know that as soon as it arrives the old adaptor will turn up....

here: http://www.maplin.co.uk/Module.aspx?...ce=14&doy=5m10

or here: http://www.maplin.co.uk/Module.aspx?...ce=14&doy=5m10

I have the second one because it means i don't need to cary around one of those really annoying 'cloverleaf' power cables that HP insist on using their power bricks.
http://www.maplin.co.uk/images/full/29240i0.jpg