10 Things You Wish You Would Have Brought With You

They send you a very helpful packing list, BUT my strongest advice is to find someone who recently served in the mission you have been assigned to and ask them for packing advice. Here is a list of things that they don't tell you to bring on the list that you'll write home later asking your mom to send you. Save her the postage and bring them.

1). Laminated pictures of your baptism, family and your temple to put in your scriptures that you can show investigators
2). Recipes. You'll have days without lunches or dinner appointments where you'll want more then anything your mom's home-cooked meals, or you'll have a family night where you wish you could let your investigators try mom's famous cookies.
3). Make or buy a Plan of Salvation diagram in your mission language. This will save you time in the mission when you realize how much this will helped you teach and help your investigators understand God's plan for them in a simple and visual way.

Testimony Glove, great for kids and those without a strong religious background

4). Buy a good and sturdy backpack. In many foreign countries they don't make good bags or backpacks and you'll wish you had one. Make sure it has pockets on the sides for your water-bottle and a place to easily access pass-a-long cards. (this is a good time to find someone who served in your mission, because some missions don't allow backpacks)

Blocks that teach about the things that were in Christ's Church that were lost in the apostasy and then brought back in the restoration

5). Music! This also depends on your mission. Different missions have different standards on what kind of music you can listen to and how, but there is nothing better than having more than one CD so you don't have to listen to the same Mo-Tab cd for 18 months.
6). A good notebook or binder that you can use for your personal study notes. You'll want to keep these insights for years to come in a nicely bound notebook or binder.

These are only 3 of the 7 shoes that looked like this during one point in my mission

7). Burn a copy of your favorite Mormon Messages in your mission language
8). Some good pens and pencils. If you going foreign they can be expensive and you'll need them for personal study and you will find that most foreign countries don't have pens and pencils like we do.
9). Make a list of your favorite snacks and treats and leave it with your Mom. Sometimes Moms' love to send us packages with goodies in them but they forget what we like and don't like after a year and a half
10). You will walk more than you ever have in your entire life! If you can only bring a limited amount of items, buy some shoes that you tried on before that fit well so that when your other shoes wear out, because they will, you can have some that you know already fit, that a family member can send to you