Ok, the blanket humping thread has prompted another similar question: What common inanimate household items have you used for self-stimulation? Have you used furniture, bedding, appliances, stairs, walls (have I missed anything)? Specify. (Please don't include the usual sex toys - everyone knows what those are for)
I like humping the arms of my chair or sofa. I don't do a lot of insertion, but anything that will sit still for me to rub my clit on is fair game!