2 20 x 3 circle magnets are needed for the base of the stand.
I also use rubber feet from amazon for the feet to stop it from sliding about
100 PCS Self-Adhesive Bumper Pads Hemispherical Shape Noise Dampening 8mmx4mm Rubber Feet for Cabinets, Small Appliances, Electronics, Picture Frames, Furniture, Drawers, Cupboards. (Clear) : Amazon.co.uk: DIY & Tools