I received the magnetic levitation stand I mentioned recently because I plan to display the DeLorean from the LEGO Speed Champions set 77256 Time Machine from Back to the Future (€27,99) in a flying situation.
Long story short: it works.
To elaborate a little, the tray is powered by a power adapter, you have to be patient to position the magnet well in the center and you end up with a support that allows you to place the vehicle in suspension. The finish of the whole is very decent, the tray is sober with a very correct beveled finish on the sides.
The magnet, equipped with a non-slip felt pad, rotates slowly on its axis, and the effect is quite convincing. The vehicle used here, from the LEGO Speed Champions 77239 Porsche 911 GT3 RS set (€26,99), floats about two centimeters above the platform, which I think is more than enough. The magnet on which the vehicle is mounted doesn't protrude too much at the edges; it's a little thick when viewed from the side, but I think it looks very good.
Note that when the platter is powered on, a very slight whistling sound can be heard. I am not sensitive to these frequencies and they don't bother me, but I know that some people cannot tolerate this coil whine , which is very common in electronics.
Whether you should spend around fifty euros on this is up to everyone to decide depending on their budget and priorities. Personally, I really like the visual effect and it will look great on the living room sideboard. Before I get tired of it and give it all to Chloé so she can have fun displaying an expensive bottle of perfume in her bathroom, for example.
