Get containers or bags
First you need to buy reclosable bags for storing snacks. You can also buy small reusable containers for this purpose.
Buy the snacks you desire
Next you need to buy the snacks which you love or want for your lunch. Get your favourite snacks from your local bakery shop. Remember that these food items or treats should have 10 to 30 calories each.
Divide snacks into 100 calorie portions
After getting your desired treats, you need to pack them in 100 calorie portions. For example raisins have 1.5 calories each. Thus you can place about 60 raisins in the container in order to make a 100 calories snack pack.
Uses of snack packs
Keep in mind that snack packs are great source of meal when you are working in office. It will help save money of buying food from different restaurants every day. In addition to this a person can carry snack packs while travelling and keep his stomach full. You can also carry snack packs in movies if they allow.