I "discovered" the aluminum Olicamp Space Saver mugs a couple weeks ago and wanted to share. I've owned the stainless steel version in years past, but I didn't know that they made an aluminum version. As with the steel model, they have large folding handles and will hold a Nalgene bottle, saving space in your pack if you want to stow it in the water bottle pocket with the bottle. Of course a 1 liter platy will nest in one, as well as most recycled spring water bottles.
Capacity is 24oz/750ml and the surprise is they weigh just scant fractions of an ounce more than a similar titanium version. From left to right below is the hard anodized version at 3.6oz, a Stoic titanium mug at 3.2 oz, and the clear anodized model of the Oilcamp at 3.4oz. eBay prices start at $11 for the clear anodized model and $14 for the hard anodized option-- both including shipping!. I think that is quite a bargain. With a little roaster pan foil for a lid, they make for a good light option to a typical Ti mug at 1/3 the price. Perfect for Scouts I would think.
If you must, the handles are easily removed and weigh 0.4oz per pair. The mounting plates are riveted in place and I would be cautious about trying to remove them.
The Snowpeak Hotlips silicone lip guard is a perfect fit as well.