Aside from the obvious necessity of an opponent and a court on which to play, the padel gear you need - like with any racquet sport, really - is pretty basic: a racquet and a ball.
Padel Racquet
The racquet, which is called a pala or paleta in Spanish), is a thick solid racquet perforated by small holes. The racquet can be no more than 45.5 centimeters long, 26 centimeters wide and 38 milimeters thick .
Padel Ball
The padel ball looks and feels like your everyday tennis ball and, in fact, tennis balls are often used. However, an actual padel ball is actually slightly less pressurized than a tennis ball.