I bought one of these Ikea laptop supports a few months ago. I bought two of them and found that really, I only needed one, So, I decided to make the other a charging station. This is actually one of the great things about the Ikea products, is it's adaptability to get hacked into other things. :)
I started out by drilling a few holes into the support, where you might want to put the cords thru. Important note: make sure the plug fits thru the drilled hole.
So, that's pretty much the gist of the whole project. I added a piece of felt on top, and cut some slits where the holes should be. This helps the components from sliding. I bet a spare silicone baking sheet would be even better, but I didn't want to cut mine, plus felt made the next part much easier to do.
I added the prickly part of a few velcro pieces onto the support. The felt easily sticks to this, so I didn't have to use the other side of the velcro. This also meant that I didn't have to match up the two sides of velcro if I wanted to remove the felt (or even replace the felt).
Happy National Craft Month folks.