While store bought Play-Doh does conduct electricity and can work as the conductive dough, making the conductive dough at home is a much cheaper option. The home-made conductive dough works just as well as store bought Play-Doh, and I would suggest making the dough at home and saving a trip to the store. Most of the material needed to make conductive dough can be found at home, or can be bought for a super cheap price, so it is really unnecessary to go out and buy Play-Doh.
The same goes for insulating dough. You can easily make it at home.
The recipes for making conductive dough and insulating dough at home are sub-menus to this page. Go check them out so you can get started as soon as possible!