This, I must say, is one area that I've had a lot of experience with. You see, I have a beautiful daughter named Alexis, who you might say is... well, quite challenging at times. Smart (sometimes too much for her own good) outgoing, funny, but yes challenging.
So throughout the years, I would say since she was about 5 or so, I've kind of had to be creative with different behavior systems/charts. Ready, Let's go!
REWARD AND CONSEQUENCE JARS
One behavior "system" that I used in the past was the Reward & Consequence Jars. It's really simple and straight forward.
The system really helps with taking the hassle out of trying to come up with an appropriate reward or consequence at the spur of the moment. The kids like the fact that they get to "pick" their reward/consequence, they see it as being more "fair".
Basically all you need are 2 jars (I used Mason Jars), some cut up paper and some crafty stuff to decorate the outside of the jars.
I would suggest that you get your child involved in preparing the jars and also let them give you some input as to what they think the rewards and consequences should be. This prepares them in advance to be aware of what's going to happen when they exhibit good behaviors and what's going to happen if they exhibit bad behavior.
* Decorate the Reward jar, you can cover it with construction paper and decorate it with smiley stickers, etc. or make it your child's favorite character, make it as easy or elaborate as you want.
* Next decorate the Consequence jar, same as above although obviously this one should not have a happy theme.
* Get some pieces of paper that are big enough to be folded in half then folded in half again. Around 14 pieces should do.
* Write down 7 "rewards" and 7 "consequences". Some ideas for rewards might be to stay up an extra 1/2 hour, have a pizza night, rent a movie, do 1 less chore for the week, spending "extra" time with mom or dad, have a friend over, etc.
* Consequences might be go to bed early or no computer etc. Try to make the consequences short term, don't say for instance no t.v. for a week. You don't want to discourage the child to the point of no return.
* Fold the paper so writing cannot be seen and put them in their respective jars.
Predetermine how you will keep track of "good behavior" you could keep a simple chart using stickers and say once they receive 5 stickers for whatever behavior or even a chore you want to focus on, they get to pick a "reward" from the jar.
Depending on what behaviors you want to focus on and your child's age and personality will determine how you set this part up. With a younger child or a child that needs a lot of reinforcement, you might choose to reward say at the end of each night. It's what works best for you and your family.
* An unacceptable behavior should get an immediate consequence.
Another variation to this system could be to use a jar with marbles. Each time your child does what you ask, put a marble in the jar. Each time he/she doesn't take 2 marbles out. At the end of the day he/she earns a reward based on the number of marbles left, more marbles, bigger reward, less marbles, small reward. If there are no marbles left, then he/she receives a consequence.
* Next explain to the child how this "system" is going to work.
Make sure the child fully understands the "rules", post a chart on the fridge or wall clearly stating what is and what is not acceptable. Some examples might be "no hitting", "no name calling" "no talking back", etc.
Don't set them up to fail, make them aware of some positive things you are looking to see like "helping a sibling" "chores done without whining" "offering to help without being asked".
Rewards and Consequences 
