Making historical costumes can require significant investment in time and money. But what completes a costume and makes it look more authentic is accessories, and these need not be expensive or even difficult to acquire. These are just a few that I have noticed and I may post again if I see more.
A must-have accessory for ladies and gents, particularly at balls. Kitten Damour sells satin, fishnet and lace gloves in black and white. For evening wear, Costume Box has a range of elbow-length gloves.
Fans and Parasols
Hats and Shoes
These are perhaps the most expensive, but what helps is doing research as well as keeping your eyes open. I recently purchased my dancing slippers for the regency from Big W, they were ballet flats. The same with hats which can be easily decorated with ribbons and artificial flowers.