A couple of months ago, I picked up APC Universal Plug, which is a small, very light weight convertable world power adapter. This takes the place of my largish adapter with slide selectable plugs. It was $14.99 and is really nice and was an unexpected find at Fry's.

This is the smallest, lightest adapter I've seen and is sturdy in use, though it is mostly plastic and doesn't feel as solid as some heavier adapters at first. It is also extremely cool in how it converts between plug configurations.

Here's the URL: http://www.apc.com/resource/include/...NPA&tab=models

Click on the "More Images" to see how it reconfigures.

I'm not sure why this isn't more known and available, but it is easily my favorite world plug adapter.