4D Blankets
Blankets are good for a thousand different things, but we can only come up with one thing off the top of our heads: for keeping you warm at night. Even if it’s not chilly, it’s nice to have a blanket around. At the very least, it’ll keep monsters from pulling on your leg while you’re fast asleep.
But getting your blanket oriented correctly before bedtime is a struggle. Finding the long side of the blanket and positioning it so that it aligns with the long side of your bed is nearly impossible in the dark. So, you’ll have to get up out of bed, turn the lights on, fix the blankets, turn the lights off, then turn them back on and head to the bathroom because you forgot to pee.