I really do recommend that you try to make as much yourself as possible. What follows is just a bare outline to get you thinking. Miniature plywood, balsawood and basswood can be found at many general hobby shops as well, but are more often found in more specialized miniatures and model-making shops. This period has simpler overall shapes, and you can put more time into finishing each piece correctly, rather than worrying about the silhouette. You can use the same small lumber for the furniture that you use for the house.
Details can be chip-carved, with practice.
Jewelry findings and small copper, aluminum, and brass tubing are incredibly useful for all kinds of things. Another item that you will find helpful, 'tooling foil', is widely available in brass, copper and aluminum and can be cut with ordinary scissors to make metal straps and shapes for whatever you need. With care, you could make your own 'pewterware'. Fabric items are very easy to make. Linens and pillows can be made easily by hand, no machine required, and it's more authentic.