Marble (toy) conventions. Additionally, many glass artisans produce art marbles for the collectors' market only, with some selling for thousands of dollars. Marbles are made using many techniques. They can be categorized into two general types: hand-made and machine-made. Marbles were originally made by hand. Stone or ivory marbles can be fashioned by grinding. Clay, pottery, ceramic, or porcelain marbles can be made by rolling the material into a ball, and then letting dry, or firing, and then can be left natural, painted, or glazed. Clay marbles, also known as "crock marbles" or "commies" ("common"), are made of slightly porous clay, traditionally
Jenna Marbles has also created items with some of her most memorable quotes printed on them (e.g. "what are this"). Marbles also hosts a weekly pop countdown on SiriusXM Hits 1 called "YouTube 15". In 2016, Marbles became an executive producer for "Maximum Ride", a film based on the series of novels of the same name by James Patterson. Marbles does a weekly podcast with her boyfriend Julien Solomita called "The Jenna Julien Podcast" (formerly called "The Jenna and Julien Podcast"). Topics focus on things such as stories growing up, conspiracy theories, YouTubers and other general topics. They sometimes feature other YouTubers