I usually love the work but yikes

What on earth can I put in these super narrow mailers???? I sell and own a Cosmetics company and even my lashes can't fit in here. It just ends up being a waste for everyone but I know for next time look up the sizes before approving. But they look good regardless. I would order again because like I said I most of the time love the work Sticker Mule does so I will order again just not in this size so I put no.