A recent client of mine asked me to help organise her home office, where she and her husband run their 2 businesses (I will share 'part 1' of this on Thursday). They have a lot of paperwork and needed systems for keeping the paper clutter at bay. When putting the plan for the space together, I researched lots of different organising methods, as I know paperwork is a real nightmare for a lot of people. Here are some ideas you might find helpful:
