I like them because they're very sturdy and the sides are slotted, so there's plenty of ventilation for the rope to dry when stored. I've seen them around town, but I can't remember where, you might want to check with Donaldson Nets in Anchorage to see if they have something like them. I can stack about 600' of 3/8" cotton rope in each basket.
Some of the sturdier laundry baskets should accomplish the same thing.