Ironing without iron - with a hair dryer
You do not have an iron? Who needs an iron? Do you have a hair dryer? Let's go!
Lay the garment to be ironed (in things with creases will be difficult!) As smooth as possible on your bed, a carpet or other smooth surface that can store heat and put your hair dryer on full load.
Heat the surfaces of the garment where the ugly wrinkles appear and stroke the fabric while still hot as possible with the palm of your hand over it. For stubborn wrinkles make two or three times - and already the shirt, T-shirt, sweater etc. is wrinkle free!