I'm not sure what the blue screen is, but the joystick on the right is an "AbleNet Rock Adapted Joy Stick" as seen at https://www.rehabmart.com/product/rock-adapted-joystick-34709.html. It is a pediatric assistance device intended for use with special needs children. It essentially emulates a mouse in a fashion suited for uses where physical exertion of an actual mouse would be too exhaustive.
If you purchased these products together, I think it would be safe to assume that the screen is also some form of pediatric device. I'm not sure though what it's functionality would be as it looks like a regular monitor to me. Do the devices work, can you power them on? That might be one way to tell what they are supposed to be used for.
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