Citikids offers a huge variety of Clothing & Accessories for baby and young children. I bought my beautiful Peg Perego stroller there and although the prices were much better on the internet, being able to touch the stroller in a physical store was much better for me and that is why I bought it.
The best thing about University Art is that it offers a discount to the school my cousin attends - Academy of Art University. The selection is not great but they have everything that students of AAU need.
Discount store of the discount stores -Amsterdam Art. I would love to go there all the time but unfortunately the cariety of items is not that great. Prices are great, though
Michaels Arts & Crafts is one of the largests arts and crafts store in the bay area. It has lots of good sales and I only visit it when there are those sales going on.
Hobby Company Of San Francisco is a pretty pricey store. You can find most items there but expect to pay premium price. I used to live in Richmond District and I used to visit this store and bought lots of wooden stamps.
Jo Ann is a really nice discount craft store. I ge their coupons by email all the time (I suggest to sign up for that) and always buy something either on sale or with a coupon. Their after-holiday sales of 75% off are superb
Mendels has a really wide variety of craft materials. I used to go here before I discovered Flax and always liked their selection. The good thing about that store is that it carries low priced in addition to high priced alternatives.
I honestly never went to Flax when studing art because I heard of the store being really overpriced. For the first time ever, went there when I needed to make custome invitations for my daughters birthday. I was shocked at a huuuuge selection of craft suplies and now I only go to Flax.
Utrecht Art Supplies was the only store I used when I was in Art School because it always had what I needed. I also liked Amsterdam Art but that store was always out of something and thus I ended up going streight to Utrecht Art Supplies.
The Art Store is definately one of the better art stores in San Francisco. Besides having a really nice selection of art supplies to choose from, it is located in a very busy area that is accessible by buses.