A Bra
You use a club to hit a ball into a hole.
Pin
Putt-Putt golf is designed, so the player can get a hole in one on each hole if they use some skill, so it is more common than you would think. Trying to get a hole in one on a real golf course is very rare and is every golfers dream.
I'd use a permanent marker. As you (carefully) count each one, color it in with the marker, to avoid counting any one twice and enabling you to know when you have counted them all.
A putter in golf allows you to hit a ball in close proximity to the hole. If you were to use, say a wedge you would completely overshoot it and miss completely.
You would use a putter when you are on the green, or just off the green to roll the ball into the hole (well that's the plan!)
You can use nail polish remover to remove most permanent markers off a disc.
You place a coin behind your ball, if they played away and hit your ball they would receive a two shot penalty- they would then have to play their ball as it lies and you would have to replace your ball.
It doesn't matter if it's stroke play or match play. The club you use depends on the distance to the hole and your lie.
Golf ball markers come in various shapes and sizes. Under the rules of golf you can technically use anything to mark your golf ball on the green, you can use a tee, a pitch mark repairer or any coin. However good etiquette would be to use a small coin about 2-3 cm's in diameter and one that lies relatively flat to the ground as to not have any effect on your playing partners.
Golf nets are not used to cover your golf clubs when not in use. Golf nets are used to stop the golf ball after you hit it. It is like a background stop for the golf ball. There are golf nets for indoor and outdoor use.
It depends on what marker you have, a marker like a 3.5 Excellerator, Tac-5 (any marker of the TAC-5 brand) or a similar marker like these, you can use HPA in.