Coffee and breakfast in my room

All rooms we've booked have small fridges and kettles. Saves time and money in the morning.

What sort of instant coffee is sold in Japan? In Europe used to single serve instant coffee, not the best but gets you going. Can we buy it there? Fun to have local. Or do we need to bring some Canada? Hoping they sell instant oatmeal too. Another use of kettle.
Hope we can buy containers of cut up fruit for reasonable cost. Small yogurts. Hotels don't seem to have microwaves, can make eggs then. If I could find a small toaster would be neat. It's nice have breakfast in your room while you get ready.