“Don’t lightsaber daddy!”
Obviously, this advice is worthless if you’re a Skywalker..but.. for the rest of us.. it’s pretty good advice…
And on a related note, if you have a smoke/carbon monoxide detector in the house, that can be tested via infrared (like a normal TV remote control), don’t let your toddler chase you around the house with a lightsaber, that sends out infrared beams to let the other toy in the set (a little Yoda that teaches you how to use your lightsaber) how the lightsaber is positioned!