Looking at all ready-made options on Amazon and elsewhere - anyone who will roll out an adult-oriented well-made single-button camera that takes in standard thermal paper rolls will make a fortune. This is such a great thing to have for get-togethers and parties. But it's essential to not being bound by $X/shot proprietary cartridges and be able to shoot and snap without thinking. Mementos for everyone!

* ... without thinking of costs involved. $2 per polaroid with half of them not even developing properly is a bit too high for spontaneous photography urges.