Has your LCD screen got a cold cathode display for a backlight?
Some LCDs may be susceptible to a magnetic force, I'm not sure if they are or not these days and the electrons in an LCD are kind of passive or stationary so maybe it would be OK.
Dunno.
I do know I'd try to do my homework online to establish if there was a chance of screwing up or corrupting any of my electronic gadgets.
The product itself?
It is just bog standard polymorph mouldable thermoplastic packaged with bog standard strong disc magnets that have been packaged together and given a name!
You could buy the materials yourself online.