If you're the type to think functionally in general and would appreciate that, I'd get a new sheitel that you really like- because you will need a new sheitel at some point anyway, and it's something you are already used to owning and costing this much. Agree about furniture if it's something you would think about saving up for anyway, or that would really make you happy and give you a lot of use. If you are musical and an instrument would be great for you and fall in that range and really be great for you and make you happy- that could be great.
I would get a built in breakfront in my dining room. Or redo my floors in my kitchen with wood or something (my kitchen is small so would be that proce probably) or I'd get fancy beds for dh and I or redo my guestroom. But we have no idea about your house/what's new/redone/needs to be updated so can't really help you...can you give options for us to advise?