Can you use regular spray paint on a plastic model?

Model glue is appropriate as it is designed to melt the plastic and "weld" the parts together. Super glue is much easier to take apart whereas model glue will not...

No. You cannot substitute a microwaveable plastic bag with a regular plastic bag.

No. If you put the mug in the dishwasher, there is a high probability the paint will come off.

You can use acrylic but you will not get the best results. The acrylic paint will harden the shirt and likely come off in the wash.

No, the table cloth is not strong enough and will rip. Also, it is likely not long enough.

You can spray paint the furniture. You don't need to use the rust protector if there is no rust.

It’s not necessary, but some model enthusiasts prefer to prime their projects before painting them. Use a thin coat so you don’t obscure any details. The primer will slightly roughen...

Yes! Spray one side of the pot before spinning it around and spraying the other side.

It shouldn't be a problem. Usually D string magnets are raised higher than the others.