On top I have gift bags full of other gift bags in 3 categories - Christmas, Birthday, and Showers. I can simply reach into the themed gift bag and pull out another bag in that category. All the wrapping paper stays nice and tight in the plastic bin, and those black shelves are full of extra cards (I literally keep cards on hand for all occasions, including lots of blank ones for emergencies!) and plenty of tissue paper.
I am a huge ribbon/bow person (if you're wrapping something in the first place, you may as well make it pretty!) so I took an old shoe storage organizer and hung it up. It was a little too long, so I cut one section off and hung it above on it's own full of tape, scissors, gift tags, and pens.
This whole project literally took less than 30 minutes, and now every time I have to wrap a present it's so much more efficient! And the wrapping station hides behind the closet doors so guests don't even know it exists when they're over.
So go my lovely readers, go make something useful out of that extra closet space! :)