What are some things (other than internal organs) neodymium magnets should on no account come into contact with? Are they going to fuck up my satellite dish or other assorted aerials if they get near them?
Most modern devices have good resistance to strong magnetic fields. The only things you really need to worry about are pretty much obsolete. Mechanical clocks and watches can be damaged by contact with magnets, as can any magnetic recording media (cassettes, VHS tapes, floppy disks, the magnetic stripe on your bank cards).
The internal compass on your phone will need re-calibrating if it's exposed to a strong magnetic field, but your navigation app will prompt you to do it and it's a simple matter of waving your phone around in a figure-eight pattern.
"Contactless" (RFID) chips are unaffected by static magnetic fields, as are any other kind of antenna or radio device.
>>2967 Slightly wrong, though. You can really piss off power supplies in equipment using moderate magnets nearby. The inductors in switch mode power supplies can be made to saturate if you give them a decent external magnetic bias - at which point they stop being inductors, turn back into a bit of copper wire, and the power supply loses regulation.
(I sort of knew this was possible, but glomming a PoE-powered piece of kit to a steel barn using magnets caused the (cheap, shitty) PoE widget to fail hot, so now I really know this. You do too.) Moving the PoE widget to the other side of the box fixed things.
>>2969 Also - your satellite dish won't care, but the LNA on the front might if it's using a lump of ferrite to switch between polarisations.
None of these things are anywhere near as bad as eating them / sticking them up your arse (or any other orifice) / letting them slam together with any part of you in the gap.
The lump on the end of the prong. The round bit on the prong is the feedhorn that collects the reflected signal from the dish. The boxy bit with wires hanging out is a Low Noise Block that amplifies the signal and converts it to a lower frequency for distribution to your various boxes.
