Cello in cigars - I cut the bottom flap off so the foot can breath easier. Sure cello is permeable to an extent, but it will slow down the acclimation process. So I cut the foot off the cello. It helps shorten a cigar's "sick" period, at least in my experience.
Plastic wrap on boxes - I'm uncomfortable taking the risk that my cigars were damaged in transit, and not finding out until a long time later. So I always remove the plastic, open the box and inspect contents, and then put away in storage.