You will need a vessel to heat water in, a source of heat, gauze or muslin, thread, a delivery tube, a receiving vessel and ice.
You will also need a pretty bottle to store your scent.
For this example, we used a conical flask, a fabric bag of sprigs of lavender plus shredded, a plastic delivery tube and a test-tube in a beaker of cold water. The oil was stored in a film cannister. You may use whatever equipment you can find, at whatever scale you need to produce your scent.
If you are blending oils, you will need a dropper pipette for each raw oil you use.