I agree with eslater that your husband shouldn�t be tied up and left alone in the house.
Sometimes my wife would have me serve her and her boyfriend while they would relax on the sofa in the living room.
She would lock a six-foot length of light chain around my neck and lock the ends of the chain around my wrists. Then I would have to make takes and put together snacks and bring the takes and snacks to them.
I would have to squat in front of them to serve the takes or snacks. She liked the sound of the chain and the way it limited the range of my arms. She or her boyfriend could do anything they wanted to my cock, like squeeze it or slap it, and I couldn�t stop them. Nor could I touch my cock when locked in the chain.
My wife also had a punishment chair that she would tie me to when she wanted to punish me. She found an old wooden dining room chair at a yard sale. Something similar to this one with horizontal slats in the back.
She had me remove the upholstery and replace the seat with a flat piece of plywood. A piece of coarse sandpaper is thumb tacked to the plywood seat.
She would have me take off all my clothes and sit down on the sandpaper. After binding my ankles to the front legs of the chair, she would choose which of the horizontal slats she wanted to tie my wrists to. The higher the slat, the more I�d bend and the more strain on my shoulders. The highest slat would be the most painful.
She would usually leave me tied to the chair for an hour or so while she did other things around the house. Once, she was really mad and tied my wrists to the second slat from the top and left me sitting for several hours while she did who knows what around the house. My shoulders hurt the rest of the day and my ass was red for a couple of days.