Naturally:

* Birds: They use their wings to generate lift and propel themselves through the air.

* Bats: They use their wings, which are actually modified front limbs, for flight.

* Insects: From butterflies to dragonflies, many insects use wings for flight.

* Seeds: Some plants have seeds designed to float on the wind, like dandelion seeds.

* Leaves: Leaves blown off trees by the wind.

* Clouds: Made of water droplets or ice crystals, clouds are moved by wind currents.

* Smoke: Particles from fires and other sources are carried by the wind.

Human-made:

* Airplanes: Use wings and engines to generate lift and thrust for flight.

* Helicopters: Use rotating blades to create lift and maneuver in the air.

* Gliders: Use wings to generate lift and soar on air currents.

* Kites: Use wind pressure to lift them into the air.

* Hot air balloons: Use heated air to create lift and float in the air.

* Parachutes: Use a large surface area to slow descent and allow for safe landing.

* Balloons: Filled with lighter-than-air gases, like helium, they float in the air.

Other:

* Paper airplanes: Simple, foldable toys that fly using the principles of aerodynamics.

* Frisbees: Discs that fly through the air using a combination of spin and lift.

* Paragliders: Used for recreational flight, harnessing air currents.

* Hang gliders: Similar to paragliders, but with a rigid wing structure.

This is not an exhaustive list, but it provides a good overview of objects that move by air.