- Balloons: Helium is used to fill balloons because it is lighter than air and it does not react with other substances. This makes it an ideal gas for lifting objects.

- Party balloons: Helium is used to fill party balloons because it is non-toxic and it does not cause allergic reactions. This makes it a safe gas for use around children.

- Medical balloons: Helium is used to fill medical balloons because it is non-toxic and it does not cause allergic reactions. This makes it a safe gas for use in medical procedures.

- Scuba diving: Helium is used as a breathing gas for scuba divers because it is less dense than nitrogen, which makes it easier to breathe at high pressures.

- Magnetic resonance imaging (MRI): Helium is used to cool the superconducting magnets in MRI machines.

- Aerospace: Helium is used as a propellant for rockets and satellites because it is lightweight and non-flammable.

- Party tricks: Helium is used to create a funny voice effect when inhaled.

- Superconductivity: Helium is used to create superconductivity, which is the ability of a material to conduct electricity without any resistance.