Red Bluff? If you had bothered to click that link, you would see that Red Bluff's motto is "A Great Place to Live". Having never lived there, I shall refrain from commenting...but if you are just visiting, there is not a whole lot to do. And it's really, really hot all the time. [Note, anything within an hour drive of Red Bluff will be considered as a thing to do in Red Bluff for the purposes of this post.]
1) Abbey of New Clairvaux--So there are these monks...and they make wine. It's not great wine, but it's wine, and it's not expensive. In addition to making wine, they are also (re)building an 800 year old monastery from stones that William Randolph Hearst brought to California from Spain.
2) Sierra Nevada Brewery--A fantastic tour; it's free, and they let you stick your hands in the hops. Warning: Most Sierra Nevada beers are very high in alcohol, and they make you taste like 10 of them...and they pour each one in a different glass so they can pour them really quickly to make room for the next tour.
3) Try to take a portrait of Jancie. Jancie does not like cameras...and I am not a very good photographer. Here is my best effort.Bahai'i Temple (which is nowhere near Red Bluff).