Broken Watch

One would be forgiven for assuming that a Broken Watch isn't of much use. However, preserving one using Gleaming Compound turns out to have a positive outcome for any active Potion Effects. In fact, it extends their duration by 50%. Given the immense force required for breaking a Clock, simply using a Crafting Table is not an option. Instead, throw some Leather, a Clock as well as a piece of

Gleaming Compound onto the ground and crush them with a piston.