I once read an article by Massad Ayoob that at first sounded like a bit of overkill, but was founded in a lot of common sense.
He stated that he had a vest he kept in his bedroom. It contained a firearm and spare magazines, but also things like a flashlight, shooting glasses, etc.
In other words, he thought out the aspects of a late night home invasion, and then without the pressure of an immediate visceral response, calmly chose implements that would help on such an attack.
I think he even made mention of the responding police finding him in pajamas and his handgun vest.
Taken realistically, the idea has merit. I don't think you should sleep with an AK magazine duct taped to your thigh, but a nightstand drawer with necessary items might be a very good idea.
For example, instead of fumbling for a light, a dedicated SureFire E1e with long term storage A123 batteries would sure help. Perhaps a spare pair of your prescription eyeglasses, or a pair of flip-fllops. In other words, think throught the attack.