You need to get a few things straight...
You did not buy any "Rick Steves' UK and Europe power adaptors". There's no "power" being "adapted" - you merely have plug adapters so the plugs on your charging devices can fit European sockets.
Second, you do not own any "iPhone and iPad voltage converters". You have chargers for your devices (which, like most modern electronics, work with both 110 and 220 volt systems).
Next, this part is confusing:
Is there an all in one device that anyone recommends?
Exactly what devices are you looking for? What you already have is exactly what you need. You can't get rid of the charging blocks (aka wall warts) for your iDevices - that's how they charge. The only thing you might want to get is a power strip or similar device that gives you more outlets - you plug the power strip into the plug converter (so it fits the wall plug, then plug that into the wall socket) then you will still need all your individual charging blocks for each device (just as you need them at home); plug each wall wart into the power strip, you're done.