I still do most of the things you mention. I don't trim the edges of my topo maps any more, because I own just about every map for the Sierras and already trimmed them years ago.

I'm taking my ten-year old on his first extended excursion in two weeks, and just today hacked off his toothbrush handle. He's never had the privilege of brushing with tooth powder before, but he's going to. He loves pancakes, so I bought a cheap spatula this morning and hacked the handle off that too.

I still weigh every single item on my digital scale, including the individual components of my first aid kit and repair kit. Can't help myself -- I'm a gram weenie.