Fuchsias and Abutilons (flowering maples), Schizostylis coccinea (crimson flag), Hybrid Mahonia 'Charity' and 'Winter Sun', witch hazel ,Sarcococca and Darwin barberry, Grevillea 'Canberra Gem', and winter jasmine. To find these just do a search on daves garden. there is a list there of companies that sell them.

I have abutilon and winter honeysuckle (Lonicera fragrantissima). Then there's anything that might attract insects ... a big part of a hummer's diet.

I am in Port Orchard, WA. I had an Anna hummer on my fuchsia hanging basket in December when it was still blooming. I think it was Indian Maid. Also, on my feeder with 2 inches of snow on top. My neighbor has a winter blooming plant similar to Oregon Grape, and he had 3 different hummers in January. I have seen lists of winter plants on Internet. Just keep looking.