I didn't prepare for tax time.

Over the course of the year I have spent a significant amount of money in order to work at home. The problem is I never considered any of these expenses a tax deduction but apparently they are. I should have saved the receipts for my laptop, external hard drive, office supplies, and many other items. I have no idea if I can deduct them without the original receipts. I may have email invoices for the purchases but that is about it. Next year I am definitely going to be better prepared. The problem is that my major expenses will have been incurred this year.