Monitors are destructible boxes that contain various power-ups. Breaking them by jumping or spinning into them will grant you their effect. Here are the common types:

- Ring Monitor: Grants 10 rings.
- Invincibility Monitor: Makes you temporarily invulnerable to damage and enemies.
- Speed Shoes Monitor: Greatly increases your speed for a short duration.
- Shield Monitor: Provides a protective shield that absorbs one hit.
- Flame Shield Monitor: Provides a shield, protects from fire, and allows for a fiery dash.
- Aqua Shield Monitor: Provides a shield, protects from drowning, and allows for a double jump.
- Lightning Shield Monitor: Provides a shield, attracts rings, and allows for an electric double jump.
- Extra Life Monitor: Grants an additional life.
Utilize these power-ups strategically to overcome challenges and gain an advantage.