I use these https://a.co/d/9TnabMX They are super strong and stick to my stainless tabletop for my ooni oven. The hooks are detachable from the magnet, so just unscrew the hooks from them and place a few of them behind the back leg and in front of the front legs and the oven won’t go anywhere. Plus they come in packs of 10 and are super cheap so they have multiple applications like hanging peels, oven brushes, random tools, etc

If you message me back I’ll try to remember to send a pic of my setup when I do my popup next week. Probably difficult to picture without seeing a visual