A major part of Dolly Kei (and probably my favorite part), of course, is the accessory.
The easiest way to sum up Dolly Kei accessories, is to say they are unusual, intricate, antique, whimsical, at times gothic, at times macabre, and like the style itself, layered and jewel-toned. You want to avoid things that look new or modern.
Commonly seen items are fur (be it shrugs, stoles, tails and the like), large and ornate tassels (like those seen on curtains), religious relics like crosses and other imagery, toys (broken/antique and fitted onto necklaces and brooches etc, dolls, teddy bears), bones, flowers (generally dried/fabric/old looking), cameos, lace, bottles, feathers, odd fellows collars, and items that perhaps you wouldn't think to have as accessories.
Now, you may be looking at these pictures, and feeling a bit overwhelmed. Or not sure where to get these sort of accessories. It's not as hard as it seems, and you may even have things in your wardrobe already, laying about your house, or are just easy to find in stores. What makes a lot of the accessories dolly kei, isn't the items themselves, but how they have been put together, and how they are worn.
~Handmade/altered items. In my arsenal of craft and accessory making supplies, I always have ring bases, brooch backs and hair clips so if I find something interesting, I can simply glue it onto one. Instant and easy accessory! Most of my accessories are handmade, or altered purchased items. And be able to "look beyond" what a pre-made accessory looks like. Think about what you can add/do to it to make it more "dolly".
~Cameos. I know a lot of us into Dolly kei came here by way of lolita, so we own more than a few of these. And if not, cameos can be purchased easily at most clothing and accessory stores, in a variety of sizes and price points. They give an instant antique look.
~Tassels. While you may not have these laying around your home, they are easily purchased at home goods stores inexpensively. I've even seen them in "junk" and dollar stores. You can easily attach a cord, ribbon, or a connector and chain to them.
~Flowers/flower hairclips/flower brooches. Can easily be purchased anywhere. Just make sure your colour choice is appropriate. Also easy to make by attaching a brooch back or hairclip if you can't find one pre-made in a colour you like.
~Pocket watches. Adds an instant antique feel, and can be detached from their chains to make necklaces.
~Patterned scarves. Again, very easy to find, and an easy way to add layers.
~Save your broken jewelry! You never know what you an turn it into later.
~Add lace or embroidered trim to items like scarves, belts (you can also do this to your plain cardigans and skirts etc).
~Ebay! You never know what you'll find on there, and the prices can be quite low.
~Etsy/Used and Vintage stores. Again, you never know what you'll find, and can be very inexpensive.
My biggest advice when accessorizing your dolly coordinates, is to not hesitate, and to not be afraid to experiment or to go "overboard". Dolly Kei is a fashion that thrives on things being a bit odd, so don't worry about your accessories looking strange, they should :) Don't worry about matching, and don't be afraid to layer many together. Worn single, many of these peices may not have a "dolly feel", but worn in a grouping can really complete your outfit.