The free-wheeling cousin of sushi, a good poke bowl can be a make-your-own adventure meal with whatever you have on-hand. The fish can be sauced or un-sauced, depending on your preference. Here are some ideas:

To season your fish, mix together the following to taste:
Soy sauce
Sesame oil
Rice vinegar
Ginger
Garlic
Green onion
Sriracha

To make your poke bowl, compose many or few of the following together in a bowl:
Sushi rice flavored with rice vinegar and sugar and/or mirin
Tuna or salmon, seasoned (or not) as above