I'm not sure Robos and calming go together lol! Pumpkin seeds are also popular treats for taming. They are notoriously very fast active little things - and may never be fully hand tame - some people manage it, others don't, and some depends on the hamster as well. But they are well known for their antics and entertainment value, so having an interesting cage set up for them could be enjoyable for them and you to watch
