User blog comment:CharleneMilk/More Mystery Boxes!/@comment-24896668-20140707224225

I've opened a ton of them already. Not spending diamonds on it of course. So far I've seen they can contain vouchers, mining tools, land expansion items, barn/silo upgrade items, town upgrade items or a whopping 8 diamonds.

Doing the treasure hunting on my phone though, the screen resolution is not so great, and I rather not upload sucking screenshots. Mebbe I can get some open ones on my pc. My baby farm could use some extra diamonds ;-)  It's quite boring though and mousing around in Hay Day isn't so funny so I make no promises.