A tote bag is a light carry-bag that you use for carrying all sorts of things in, like your groceries.
You wag or waggle something when you wave it backwards and forwards fairly fast. dogs wag their tails when they are happy. People sometimes wag their fingers to tell someone else off.
A zigzag is a line that keeps changing direction, backwards and forwards, backwards and forwards, in a regular way. A lot of socks have zigzag patterns on them.