Things that cost a lot of money, but are worth it if you can get it somehow:

A comfortable (not fancy) house in a neighborhood with good (not fancy) people in it.

A really good guitar.

A Subaru Legacy wagon w/all-wheel drive.

A dentist who can get you to age 62 with all your own teeth (every last one with at least a filling).

Things that cost some money, but not a lot, and are worth it:

A library card, if the library has a decent collection.

A DVD player, and a Teevee large enough to see but not so large it takes over.

An adequate stereo system.

A computer that you can access the net on.

A little good bourbon.

Rare beef.

Chocolate chip cookies.

Things that cost no money, and are worth a great deal:

A partner whom you love, who loves you in spite of knowing what your're really like.

Cats. (Yes, they cost to maintain, but you can usually get them free.)

The feeling when you perform for an audience and you actually get through to them.