1 You can make a mini volcano, using, clay, gum and a can soda drink. 2  First, make a volcano shape with the clay around the soda can. 3  Be sure to leave the top open. 4  When you are ready for your volcano to erupt, put the gum in the soda drink, and enjoy the show.ips. 1  make the volcano on a tray to collect the lava (foam). 2  You can make a mini volcano, using, clay, gum and a can soda drink. 3  First, make a volcano shape with the clay around the soda can.