Floating Suction Cup Shelf

A simple floating suction cup shelf, designed to be used with 60mm suction cups or M5 screws. 

Two of these suction cups from amazon (link below) will support approximately 6 kg. However, I think most brands of suction cups would work. 

https://www.amazon.com/dp/B07X8V65MK?ref=ppx_yo2ov_dt_b_product_details&th=1