If you right click on a gadget and or look though it's menus you "should" see an "always on top" option. Check it and it's supposed to stay on top of other windows. I've had one or two that it didn't seem to work all the time though. I guess it just depends on how well the app is coded in the first place.
The hard part, at least for me, is remembering all these keyboard shortcuts. I have them written down in a text document but it kind of defeats the purpose if I have to open the document to look them up.
I guess though if I use them enough I'll eventually start to remember some of them.