Here's a breakdown of the elements you mentioned:
* Toy maker: The main character is a toymaker named Kris Kringle.
* Carves toys out of wood: Kris Kringle uses wood to create beautiful, unique toys.
* Becomes Santa: After a series of adventures, Kris Kringle transforms into Santa Claus.
* Spirits in the forest: The forest is inhabited by magical creatures, including the Winter Warlock.
* Evil golems: The Winter Warlock creates golems to enforce his will.
This classic special features the memorable songs "Put One Foot in Front of the Other" and "You're A Mean One, Mr. Grinch" (which is not from this specific special but is another Rankin/Bass production).