This holder prevent the entanglement of the cables and also prevent them to slip under the table. There are two variants: one with the cable holder raised and one with them lowered. The holes are intended for 3,5mm screws but the mounting can be made with double sided adhesive tape. For customization, the item is available at https://www.tinkercad.com/things/78BZWrMc685-sewing-machine-cable-holder