Your list looks great! We are very into crafts at home (family of artists) and my girl, who just turned 4, has arts/craft supplies available to her all of the time. We have two drawers she can access at any time, and a child-size table and chairs (it's ok if she gets stuff on the table). The things she uses the most, and that are always there for her and that i keep stocked, are plenty of crayons, washable markers (Crayola are the most washable), colored pencils, colored and white chalk, a cheap set of soft pastels, watercolor paints, several different kinds of paper (colored, white, manila, large newsprint, tracing, watercolor, origami), washable ink pads and lots of stamps, stencils, a sticker bin, cardstock and envelopes, coloring books, magazines and catalogs she can cut up, lots of glue sticks, white school glue, scotch tape, child's scissors (more than one pair - nothing worse for her than needing her scissors and not being able to find them!), ruler, pencils and erasers. Also straws, pipe cleaners, pompoms, a tub of beans and pasta (lots of different kinds - she loves making collages from different beans, seeds, rice, lentils), a tub of collected items for collages (mostly from the backyard - little sticks, acorns, pebbles, leaves, seed pods... also buttons and other little bits), a tub of yarn, feathers, fabric scraps and tissue paper for collages. And play-doh and lots of cookie cutters and rollers, of course.
For textiles, she has her own little yarn basket with several types of yarn, plastic craft needles that she can thread herself, pieces of old sweater that she can sew into, sewing cards, and a child's spool knitter. We also have a stack of felt and fleece she can cut, glue, sew, etc, though those projects she usually has some help for.
For beading, she has a big tub of beads - mostly pony beads of all colors and styles and a lot of wooden beads. I just pick them up every now and then when I see a kind I think she'd like and dump them into the tub. She has a few things she can string them on - old shoelaces, yarn, pipe cleaners... but by far her favorite and the most usable is stretchy elastic cord. We got it at the craft store in a bunch of colors - she likes the shiny ones best - it's easy to string and easy to tie, and the elastic makes it so she can actually wear the necklaces or give them to adults.
She has other art supplies that she has to ask to use, because they take more supervision or set-up. Paints (I like crayola's washable paints because they are vibrant colors and really do wash out of most things), glitter, do-a-dot markers. For watercolor painting, she can do it herself but usually asks me for water. I have a bin up high in her closet with the certain paints and markers that she needs to have set up for her. Some other kinds of projects that I have to set up are block, leaf or potato printing, 3-dimensional painting with flour or cornstarch paste, paper mache, special clays, sand designs, etc.
Speaking of set-up, a few other items we find super useful are dropcloths for painting or messy projects (I just use the kind of tablecloth fabric that is plastic on one side and fuzzy on the other - we have three of them of varying sizes, one large enough to cover the whole table, one about 3x3 and one 2x2 - and just keep them folded on the shelf when not in use), a painting smock or apron (an old adult button up shirt put on backwards with the collar and sleeve cuffs cut off makes a good smock), and wide newsprint in rolls that you can roll out on the floor for large freeform painting, hand and footprints, etc.