Can you spray paint the furniture? And do you need to use the rust protector if there is no rust?

You can use a paint comb or a wire brush to clean brushes. If you have a lot of paint caked up onto your brush, those can be very good...

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.

Earlex and Wagner HVLP sprayers are good choices for furniture painting (as per my experience).

Not all spray paints are safe for plastic, but most paints you buy in a hobby store should work. Check the can carefully to make sure it states that it...