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.
Literally impossible to answer without discussing what type of time travel you mean.
Regardless, the cop out answer is that the time travel you do by existing is the least impactful. You are currently traveling forward through time merely by existing.