I Spilled My Little Brother's Prize Possession...

So, last week was my little brother's first school science fair. He spent weeks building this awesome volcano with red lava and everything! He got a third-place ribbon, which was super cool for his first time... but I accidentally knocked over the model on our way home from picking it up... The whole thing crashed to the floor in front of everyone at the house, and now there's bits of baking soda and vinegar everywhere. My brother looked so crushed... It's not like I meant to do it or anything! I was just excited for him and wasn't paying attention... Now he's probably going to think I'm such a klutz... Anyone else ever done something silly with their siblings' stuff? Let me know in the comments, please!