Custom flags are great to have around, be it for business or for personal use. However, if you have a national flag in possession aside from custom flags, the national flag should be given more importance than the others. It should be placed not on the side but in the middle of all the flags. If you have an American flag for example and you want it displayed on the wall or on a window, then the blue portion should appear on the left side of the spectator.
There are many great custom flags sold on the market today. You can even simply order online and have it shipped to your place. You could place it next to your state flag. You can also have a custom flag made for your company with your business logo printed on it. You can opt for teardrop shaped flags or miniature car flags to advertise your company or support your favorite sports team. Just bear in mind that the design of your custom flags should never look exactly the same with your national flag.
Nevertheless, if all you have are custom flags and there are no state flags around, there are really no rules, etiquettes, or guidelines to be followed on the proper way of treating them. However, it does not mean you can take them for granted and not care for them. If you want them to last a long time, care for them as much as you would a national flag.
As much as possible, store them indoors when not in use outside. Keep them from being exposed to rain, sun, and harsh weathers. Wash them every now and then to keep them clean and vibrant for their next use.
