My favorites from mine....
- Good Knives. I registered for a couple of nice knives rather than a whole set/block. Very happy with what I got.
- Measuring cups/spoons. Really, even if you have some, can you ever have enough of them?
- Gadgets. I love kitchen gadgets, and registered for quite a few (garlic peeler tube thing, the adjustable measuring cups & spoons, different types of peelers, different type of garlic press from my usual, etc.). Nice because other gadget geeks were exciting about purchasing them for me, and it gave people some more options on how much to spend.
- Cuisinart Mini Prep - even if you have a full-blown food processor, the mini is really nice, doesn't take up as much counter space and it's easy to throw the bowl & blade in the dishwasher.
- Nesting mixing bowls. I've got plain glass ones and Pyrex ones with lits. I usually at least one from each set every time I cook. That's also something to think about... some stuff may seem fun, but make sure you can store it before you put it on the registry!
General registry thoughts - I love Target, but I keep hearing (and seeing) horror stories more and more. Be fully prepared to get two of items (or in the case of a recent shower... three) and I've heard their return policy is not fantastic. Also for Target, be aware that they turn over their selection of merchandise rather quickly for some stuff (my cousin had to re-register for pretty much all the bathroom stuff she originally registered for at Target.... she did her registry about a month before invites to the shower went out and by then, they didn't carry the stuff anymore).
And... only because I've seen it in increasing numbers lately.... be kind to the people who have to buy off your registry. I've seen way too many registries full of nothing but expensive items, or registries that are at places that aren't accessible to everyone (online, specialty stores, etc.). I'd really enjoyed the people I love telling me they had fun shopping for me, and I've sat in the audience at showers where everyone sat there and grumbled about how difficult it was to shop off the registry.
Also, I'm all for registry "peaking". If you don't want to, ask someone else to keep an eye on the status of things. It's also horribly frustraiting when someone's registry has pretty much been purchased up when you're doing last minute shopping. IMHO.