Yes, you can.
no
Small magnets should be fine, industrial strength magnets may cause problems in the cockpit
Yes, you can bring your umbrella on the airplane as a carry-on item.
Yes, you can bring an umbrella on an airplane as a carry-on item.
Yes, you can bring an umbrella on an airplane as part of your carry-on luggage.
Theoretically, an airplane does not need to have any magnets in it, but most airplanes do contain magnets. Every electrical motor contains magnets, and small electric motors are used in various parts of an airplane, such as for raising and lowering the landing gear.
Yes, you can bring a disposable razor on an airplane in your carry-on luggage.
Yes, you can bring your laptop charger on an airplane in your carry-on luggage.
Yes, you can bring condoms in your carry-on luggage on an airplane.
Yes, you can bring creatine in your carry-on luggage on an airplane.
YES you can bring them
No