We try and get them to do high 5's and to squeeze our hands as hard as they can.
We get to look into their eyes with a little light.
It helps to let them play with the light for a few minutes too

Or to check my eyes, or moms/dads
I do admit, neuro checks are very hard on little kids. Infants its really only pupils, are they acting appropriately, moving all extremities, etc. Toddlers are the worst!