Continuing the weekly thread organised by Michelle at The Turning of Generations.
The biggest risk historically was those horrid photograph albums that had sticky backs and then the plastic you placed over the photo. Thankfully, we dealt with our three albums of this kind a few years ago. My main issue is making sure that all photographs, not just genealogical ones are scanned, dated and archived. The originals archived with information and dates. I still have some older photographs, pre digital that need to be scanned and then uploaded to Flickr.
The other risk issue is piles of research papers. I am still working through the boxes and piles of papers. The risk is that loose papers get moved and then perhaps lost. Worse still to have drinks spilt on them. So,the best way of making material safe is to avoid piles and put files & papers away when they are finished with!