While I'm sure many people are 'over' pinterest by now, I think some would still find it really handy to have a pinterest feed widget. Basically it would function like the twitter widget - showing the latest things you've pinned just as the twitter widget shows your last few tweets.
It would also be great to have the option of feeding just from certain board (for example, if you wrote a baking blog, you could choose that pins from your baking pinboard will show up on the feed, but pins from your 'cute kittens' board will not).
I'm not sure how easy this would be to implement, but it would be very useful. I believe pinterest already creates RSS feeds for each account and each board, if that helps.