I bet that some morphers will make money by performing in circuses!
Or even better: Make millions acting in TV shows or movies! Marco actually does this during Book 54: The Beginning! (Which is actually the last Animorphs book!).
[spoiler]About one year after the defeat of the Yeerks, Marco was signed to help play Nick Lang, a superhero who turns into animals! He wasn't the main star, just the main supporting player, and the main special effect, doing the actual anmal transformations without any need for CGI![/spoiler]
Morph into a carnivore to go hunting, then demorph to eat what you caught!
Riot police morph skunks to spray rioters.
Morph and demorph to repair your damaged teeth!