So today I went up to Harold's Plants on St. Claude and bought what I needed to refurbish the baskets.
Here they are now - I've planted each one with a large begonia and surrounded it with interesting foliage plants - tradescantia, ferns and creeping jenny.
Bobby at Harold's Plants told me how to plant with the coco-fiber baskets. Harold's is right next to the Press Street railroad tracks, and is a gardener's paradise. I have a feeling I'll be spending a lot of time up at Harold's Plants.