Zojirushi has those containers: 16oz. Tea Thermos, Stainless Steel the basket frame is different from yours though, not metal
They also have larger containers without the filter
And they have a lot of nice things for food storage
Tea:
Flower Tea: amazon We got something like this for my MIL along with a glass teapot. It was a cool thing to try out, although I don't think the tea itself was that amazing.
Nice tea thermos: amazon
Custom tea mug with pictures of the family. I personally love stuff like this, especially if it has my dog on it. :)
Funny tea infuser: amazon
Plants:
Heritage quality tools that are New Zealand made. (Probably more than $20, but maybe something small?)
Funky seeds amazon