We may cover drying figs with straw.  R' Yehudah says: We may even stack them. Vendors of fruit, clothing, and utensils may sell [their wares] in private, for use during the festival. Trappers, cereal makers, and bean pounders may ply their trade in private for festival needs.  R' Yose says: They imposed a stringency upon themselves.

These [people] may cut their hair during [Chol] HaMoed: One who arrived from abroad; [was released] from captivity; left prison; or the excommunicate whose ban was lifted by the sages. Similarly, one who applied to a sage and had been released [from his vow]; the nazir or the metzora who returns from [a state of] contamination to [a state of] purity.