I just started substituting this year. In my area you can take or refuse any call you get so I stay at my daughter's school unless I haven't worked in a week or 2.
(check this in your area before you start, also my goal is to work 10 of the 20 school days each month. Some people want to work everyday, I really don't. I was a stay-at-home Mom for a few years prior too.)
I love it! Also being in the PTO, a lot of teachers give me ideas while I am at work that they may forget about at the meetings. It's helped our PTO a lot this year.
My daughter's school is K-8. The 8th graders are loud, the K-1st are nose pickers (germ-x is my friend!)
I always bring a bag with coloring sheets, suduko puzzles, a book for me to read during planning time, my germ-x and a bottle of water. (you can find color sheets at
www.crayola.com
, and the school let's me make some copies when I am there) Even the older kids like to color if they finish what their teacher has left for them to do. It keeps them quiet a bit longer. (not to mention a lint brush, my comb & a compact for the quick bathroom touch up I might get to do. Always bring a pocket calendar! Teacher's love to reserve you when they see you.)
So, think of your own survival kit and if you ever have a bad day, ask a teacher you trust to step in. (very loud 8th graders,lol) I've had to do it and they are glad to help.