Started as a shower thought (literally in the shower), but decided to make it more open-ended.
My answer to this would be “watch future seasons of anime that I am waiting on”.
I don’t see how that could cause a huge ripple through time.
To me the rules of time travel are that it is time travel only. Go forward or back more than a few seconds and you’ll find yourself floating in the vacuum of space rapidly dying as the earth, the galaxy and the universe continues moving.