I would suggest them getting two degrees. One would need to be in something they can tolerate doing for a living that has a good chance of earning enough money

I would suggest them getting two degrees. One would need to be in something they can tolerate doing for a living that has a good chance of earning enough money (though the actual definition of enough differs between people) and the other in what they love to do. This does mean sacrificing a lot of the fun during college, but in exchange you get both an education in what you love and a career that can support what you love even if what you love isn't financially viable.