1. Use it as a bribe
There is always someone who would be willing to do something for a piece of candy. Find those people, and use it to your advantage.
2. Limit yourself to one a day
For those who are worried about the extra calories, go ahead and make a pact with yourself that you will only eat one a day. Eventually it will run out and maybe by then you will be sick of chocolate.
3. Donate it to your local elementary school teachers
I'm sure any teacher of a group of children would welcome your extra candy from this fun holiday. It can be used as a prize during activities.
4. Save it for a rainy day
You never know when you will be feeling low and need a little chocolate in your life. It's always nice to have a stash on hand just in case of an emergency.
5. Keep a stash for the next time you host a gathering
People always like to have treats at get togethers. It is smart to be the host who can provide.
6. Sell it online
I'm sure you can probably sell it somewhere online. Don't quote me on this one.
7. Sell it in person
This is definitely possible. Sell it for a quarter a piece and get some parking money.
8. Build something cool with it
For the creative folks, it would be cool to build a castle of candy. Maybe you could post it on twitter and make it famous or something.
9. Try to return it
If you have yet to open the bag, you could try to return it to the store. It might be worth a shot if you really don't want it around.
10. Save it for next Halloween
No doubt, there's always those people who save it for the next year. I wouldn't recommend this unless you are just incredibly cheap.
11. Eat it all
This might be the most obvious option. Although dangerous and not advised, you can test your limits this year.