Try a round
Five questions against the fox, in your browser. Wait for the buzzer to light up, then buzz with Space or a tap. First in answers; miss, and the other side gets a go. Nothing is saved and there is nothing to sign up for.
Play it with friends
Open a practice night on a short general-knowledge board with no account. Your phone becomes the organizer, the TV link goes on a laptop or television, and friends type the code at trinkotrivia.com. You need two teams to start.