Yes, chinchillas need constant access to wood and loose hay to keep their teeth trimmed because their teeth constantly grow just like other rodents and rabbits too. Therefore the teeth must be constantly trimmed by chewing on hay and wood. If their teeth overgrow it can cause serious health problems. As they get older, like 10 years old, sometimes they get lazy and don't chew as much as they should, and require their teeth to be filed by a veterinarian as the overgrown teeth poke into their tongue and jaws, and cause them enough pain to stop eating.
Chinchillas also need to be kept cool, ideally, below 73 degrees F. Heat is really bad for them and can cause seizures, brain damage, and organ failure. Please be very careful with chins in hot weather. I know of several that have been lost to heat stress. Perhaps you can write about first aid for heat stress in one of your blog posts.
It is interesting that you have a chinchilla with standard grey markings and ruby eyes. It has inherited a trait from a beige chinchilla and is likely a heterozygous beige.