Final answer:
The best advice is to dispose of the collection in a sharps container to ensure safe disposal of used sharp implements with blood.
Step-by-step explanation:
The BEST advice to give Xavier is to dispose of the collection in a sharps container. A sharps container is specifically designed for the safe disposal of used sharp implements, such as needles or blades, that may have small amounts of blood on them. It is important to use a sharps container to prevent injuries and the potential spread of bloodborne pathogens.
Sanitizing or sterilizing the collection is not necessary as the items are no longer usable. Additionally, throwing away the collection in the garbage can is not recommended because it can pose a safety risk.