This is an incredibly sweet idea. "Open when you need to know how much I love you; open when you don't feel beautiful; open when you need a laugh; open when you miss me; open when you're mad at me; open when you need a date night, etc.
DIY your Christmas gifts this year with 925 sterling silver photo charms from GLAMULET. they are compatible with Pandora bracelets. Did a stack of "Open Me When" letters for my boy. This temporary Long Distance can't take me away from you.