Papier-Mache Gone Wrong

Yesterday afternoon my Mom and I spent a few hours covering some balloons in papier-mache for an activity for our upcoming family reunion. To aid in the drying process, we put the balloons outside and left them there overnight. This morning, to my dismay, not only had the balloons swelled, cracking the exterior, the balloons popped, and in two cases, actually melted! We are changing our plans, but we couldn't let those balloons go to waste!