How can I draw out a spider from behind my cupboard?
Absolutely not! Copper, CPVC, or PEX is generally the only piping that should be used for water supply lines. Galvanized piping can still be used for DRAIN lines, but it's not done much now as it's so expensive. If you're a DIY'er, use CPVC, as suggested. But be careful not to confuse it with PVC, which is only used for drains/waste/vent and is bright white. CPVC is slightly off white, and specifically designed for use as a water supply line. PEX is actually a better product, but requires some knowledge, skills, and tools most DIY'ers don't have (yet, it's catching on). Copper is the old standby, but labor intensive and requires very specific skills and equipment that intimidates some people (an open flame near studs for example). Good Luck!
report it to you local police they do take reports like that and will have a patrol car in the area it would be helpful if you could have typical times when she is in the neighborhood so the police can allocate their patrols more effectively
By accoustic do you mean cottage cheese texture? They make foam rubber rollers with slits in them, especially for those type of ceilings. You will still lose some of the texture when you paint, but the painting should be easy enough. The coverage problem might be the paint you are using. I always use Behr, and I only needed one coat to cover my ceilings.I changed color on one ceiling with two coats.