I'd go with

1. smaller teapot
2. some type of infuser like http://www.strandtea.com/shop/tea-tiger/prod_5.html
Might find something like this locally or via multiple sites on
the Internet. (However, I have brought several from this company)
3. Buy a serving carafe like http://www.thermos.com/product_detai...atCode=PUMP&q=
I own one and it does keep liquids hot over the entire day. I
actually use a standard tea basket like
http://www.amazon.com/Finum-Teeli-Pe...ref=pd_sim_k_2
stuffed into the neck of the thermos, remove it after steeping, and
screw on the carafe's lid. Now it's hot tea all day.

cdv