How To Pick A Diaper Bag. A diaper bag is just simply a bag that stores diapers. Well, that’s what it was before. Nowadays, modern diaper bags carry just about anything a busy parent would need especially when traveling. Everything from toys and medicine to pacifiers and anything you might need to keep the baby comfy and happy. Looking for a cheap diaper bag online can also be fun. When you are doing a seach, you will find many sites. One of the best places to find some of them are to search the giants…ebay and amazon. You will probably find exactly what you need there!