[primaeval]

Is there some easy way to get the channel logos or how do you guys handle that?

I personally start with this one:
TVLogo Downloader
http://forum.kodi.tv/showthread.php?tid=233068

If any logos are missing from there I add them using the Lab command in TV Guide Fullscreen to make a folder of logos from the addons.

Sometimes I even make my own with some imagemagick automation.

There are logo packs around if you ask Google.

Make sure you ask all the providers for written copyright first, in triplicate and with the official wax seal.