Hi; Last fall I loaded up 6, 50 pound brown paper corn bags full of acorns thinking to do this exact thing. First mistake was to close the top of each bag----they all started to sprout in the bag.... Then I opened them up to let air in and they were just fine until them there little critters called mice and chipmunks decied to chew thru the bottom of the bags and start depositing them all over my garage....I'm still finding them in areas you'd never think of them being. I went to put the pool filter pump on the pool this spring and low and behold it was completely full of acorns. they had crawled up the hose and into the filter. So if you're going to keep acorns In the garage I would for sure put them in a metal garbage can they can't chew through. I've had 2 hard plastic storage bins eaten through so they could get at my corn also.....they got some serious teeth on them.....