I recently had to break down my Transformers room so that I could turn it into a bedroom for my 3-year-old daughter. I have alot of loose figures that I placed into Ziploc bags and then stored them into your standard brown storage/moving boxes. I'm wondering if I keep these figures stored in Ziploc bags over time, will they harm my figures? I'm not sure when I'm going to be able to take them out of storage and I'm wondering about the acidity of the plastic that Ziploc bags are made out of. I started wondering about this because I once had an autographed baseball that was stored in a standard plastic baseball display. Over time, the ball got all of these orange "bloches" all over it because apparently the plastic the ball display was made out of was not acid-free. So is there anyone out there who can answer this for me? THANKS!!