In their most used version v4, UUIDs are random, and that's a useful property. But sometimes all you want is a UUID that is easy to remember. To hell with randomness!
A minor complication is that for a string to parse as a valid UUID, the variant and version bits should be set correctly (to 2 and 4, respectively). Here are a few suggestions that pass the test:
facade00-0000-4000-a000-000000000000
decade00-0000-4000-a000-000000000000
ad0be000-0000-4000-a000-000000000000
c0c0a000-0000-4000-a000-000000000000
5ca1ab1e-0000-4000-a000-000000000000
f100ded0-0000-4000-a000-000000000000
Thanks. The first block (before the first "-") can be anything, as long as you zero-pad it! Here are some good options https://nedbatchelder.com/text/hexwords.html