Play, sport, fun, glee. In plural games, tricks, goings on.

With plural agreement. Perhaps: contrivances, cheating tricks.

collective. Nonsense, rubbish; humbug, deception.

In alliterative collocation tricks and trillibubs. In quot. 1652, trilly bubkins is a nonce diminutive. Obsolete.

colloquial. Nonsense; fooling around. Later chiefly: action or behaviour that is deceptive, dishonest, unethical, or otherwise suspect. Also…