I have a long bristle brush stores use to sell for cleaning sewing machines, not any more. I wish I would have bought several. I have an artist brush too. I don't have a drop in bobbin. A swish or two with the above brush and the lint is gone.
I bought the attachments from Nancy's Notions. I use one of two machines a lot and clean bobbin area too often to get out the vacuum. So I only use it once in a while.