KeePass's Password Generator can be used to create UUIDs [also known as GUIDs].
The following pattern will generate valid Version 4 (random) UUIDs:
Naturally, the above can be saved into a profile. KeePass 1.x creates one UUID at a time, while 2.x generates a batch of the same.
A big thank you to Dominik Reichl and everyone else who contributes to KeePass. It's a most essential tool!