Light Bulbs/Pears, and Teardrop Floats
There are two types of lightbulb floats. Teardrops are made with molds while light bulbs are free blown and are also called pear shaped. Jim Watson loved the oddity of these shapes. In the video he shows two he had on display in his office on the Oregon coast.
Tom Rizzo has a wonderful article on lightbulb floats that can be found here: Teardrops and Neversinks