I have several different boxes. The one I choose depends on how I am traveling and how many arrows I like to bring.
The larger MTM is very handy and will hold a lot of arrows with broadheads "safely" yet still hold other trinkets too.
I also like the expanding arrow tube from Gold Tip. Very light weight and compact.
Sure, you can make one out of pvc, but it will run you about $15 if you have to buy the stuff specifically (cheaper if you have the scrap). But those won't allow you to go in from the side like the Mtm and they only run about $17-30 depending on the model.
BigJim