1. Rice Cooker--I use it to make quinoa and all different kinds of rice. I recently made copycat Chipotle Cilantro Lime rice and it was awesome. I use this all the time because I can set it and forget it.
2. Crock Pot--Great for set it and forget it meals. I especially like making crock pot lasagna in it. I use it at least once a week.
3. Stand Mixer--I have a Kitchen-aid one. I use it to make icing, pizza dough, cookies, etc. It's a multi-functional machine and you can buy all sorts of attachments for it so it does even more.
Those are the small appliances I use all the time. I have a few other things I use a good bit (a set of reusable containers, measuring spoons and cups and kitchen utensils) but these are all things that end up on one's registry anyway. Hope this was helpful. :)
