Drugs

Count sheep.

Justice League Snyder Cut

Be tired enough to sleep anywhere, any time?

Eye mask. Ear plugs/noise canceling ear phones. Blankie.

depends on what space you're working with. I usually get as many pillows as I can find and then just cover myself with them. eye covers and ear plugs also work wonders.

Don’t sleep the night before your flight. You’ll be so tired you’ll knock out for most of the flight. This works best for long international flights.

Keep a book on abstract algebra handy :-) ..

horseshoe pillow around neck, crossed arms on small chest pillow, ear plugs