That is why you need to get the small capsules. They hold around 1g of packed ground herbs and are great for being inconspicuous. All you do is pop some herb into the the capsule slip it in your pocket and your good. Your parents wont even know you have anything.
The $20 ones hold around 7 grams to a half ounce of so of saffron or other spices just so you can get an idea of how much room is in those bigger jars.
I forgot to mention the inside of the I posted in the OP is glass inside also. More of these will be made custom orders are accepted with all products.