You're probably looking for correctoraline blogs for most games.
https://marapets.com/profile.php?do=blogs&id=2043005

Shimmer has a forum topic by Cowpro:
https://www.marapets.com/topics.php?id=2360836&fid=42

Mother Mordo is a tricky one, but buck2772 tries to simplify how to obtain instruments in this topic:
https://www.marapets.com/topics.php?id=2360830&fid=42

Same with Chocolate Bricks. Once again buck2772 has a discussion topic on the Candycane Harps:
https://www.marapets.com/topics.php?id=2361193&fid=42