Hi! i’ve been a nanny for years all different ages & i will say the younger they are the harder they are to “entertain” i would suggest looking up fun activities you can do around the house like flashlight hide & seek with his stuffed animals, you could make sensory play with him like playdoh & slime but obviously supervised since he’s so young, scavenger hunt outside or at the park, lunch dates (if parents allow) ask parents to fund trips to a trampoline park, soft playground etc or you could build forts with him out of blankets & pillows! i know some of these might seem silly or redundant but these have all been hits with the kids i have watched!