- "Soon, you will be delighting your friends and family with your magical talents."
- —"Introduction and Instructions" chapter of the Cast-a-Spell handbook.
The Cast-a-Spell Kit was a kit devised to develop new magical skills. It included a handbook (with some information on the spell along with useful "Essential Tips") and a training room filled with objects in which to practice spells. There was a copy of the kit at the library in Hogwarts.
There were two kits: one devised for beginners (including simple spells such as "The Dancing Feet", "Body Freezing Spell" and "Leg Locking Spell") and another kit for advanced learners (including a spell for growing legs).