Yeah, I did that a few times before I switched to using MyPoints and it worked. I suppose I could go back to it, although there's only so many glue sticks & boxes of pencils I can buy before it gets excessive. (I don't want to get anything too big to fit in my mailbox, like notebooks or folders, because I live in an apartment building with no doorman. The super will take packages if he is home, but if he's not it goes back to the post office and then we have to go pick it up. Huge PITA.)
So, I just went to order a $50 eBay card with the Target card I got from MyPoints, and I realized I had $190 on a Target GC that I thought had been used. Turns out that in my spate of cancelled orders last month I got mixed up and didn't mark one of them as cancelled on my spreadsheet. So I ordered 2 x $100 and 1 x $50 eBay cards. I figured that might be better than ordering another $200 so soon. Fingers crossed this order goes through! Then I will be all converted to eBay and will wait to see if there's an eBucks promo this month. If not, I'll just cash out back to Target before my eBucks expire. This will also give me some time to work on my rewards apps; I kind of fell off doing them last month so I haven't been earning as much as I'd like.