Light compact Teapot for travelling?

Its a bit of a sod getting the teabag back out - but I use Redbush and just leave the bag in as it doesnt seem to stew/get too strong.

A plain ordinary stainless steel T pot from yur local hardware shop? Doubles as a kettle when used with a gas burner

use a tea bag on a string.

Smart Arse.....

There are widemouth titanium bottles. Perfect to brew tea in on a camp fire or putting it on a stove or putting a wamth element on the mains in it. Yeah the bottle gets hot on the outside cause it's single wall.

what about a hard anodised aluminium kettle?

- lots of brands out there from gelert to optimus - 0.6l to 1.5l

I just put my teabags in a flask - and tip em out when it gets refilled - have done for years and years  - 1bag per 500ml  - never seems to get too stewed for me.  But then, I am (mostly) a manual labourer

Benco and I both played with making insulated drinks mugs using cans of different sizes, and filling the gap between with self-expanding foam, or simply polystyrene foam.

The ones I made left the rim of the lid in place, and used the lid of a second can (cut off with side-cutting can opener) as a lid.  The insulated mug is on the left, with outer and inner cans next to it.  I also made versions using a 500ml outer and 355ml Red Bull inner.

Alternatively, you could just wrap a simple can with Thermawrap, a bit like this:

The foam-filled ones are fairly sturdy, but not enormously so...

Apologies for the multiple edits; OM's picture insert seems to be broken again, and I've been fighting to do the insertion manually...

Nicer than aluminium!