igráčkati se to toy, to trifle (z with)
igráčkati se s svinčnikom to toy with a pencil
igráčkati se z vrtnarjenjem to treat gardening as a mere hobby, to dabble around with gardening
on se igračka z Vami he trifles with you
igráčkati se z življenjem to flirt with danger, to run undue risks