I play a super boring game in my head. Basically, I take each letter of someone’s name and try to think of a specific animal/fish/plant that starts with that letter. Then I go to someone elses name and do the same thing. The only rule is that I can’t reuse an animal I’ve already picked. It’s super boring but works at least 50% of the time for me.
Example: Frodo. Flamingo, Rabbit, Orangutan, Dalmatian, Ostrich
The more names you do in a row, the harder it gets to not repeat yourself.
Instead of animals, sometimes I’ll do countries, specific colours (super hard), or even last names (somewhat easier).