One of the big tasks I needed to accomplish was to sort and organize my finished cards. I create about a dozen cards a month. Over the course of a year, I end up with more than a hundred! If I've not used them during the year... they sit in small boxes. Its these boxes of assorted cards (some full cards, some card fronts) that needed my attention.
Once I have totally completed a card including stamping any greeting on the inside and signed the back, it is placed in a 4"x6" cello bag with the proper envelope (sometimes those are stamped too!). These are then sorted by card types... birthday, cards for kids, Christan, thank you, etc. I keep them in a longer box as shown. I still have 20-25 more cards that need to be placed in cello bags with their envy... but I ran out of cello bags!
From here it is easy for me to grab a card and go. Often my kids will pick through my card box for something they need... Or I can easily prepare a box of assorted cards for a gift. Sometimes they are sold at $5 each... less if they are very basic.
I've seen other stampers with much prettier organization systems for their cards.... nice baskets and decorated boxes or lunch box tins are some ideas. I have to really discipline myself just to keep up with this functional system. I hope you have a system that works for you. Take a photo and post the link to your blog... I'd love to see other ideas!