I keep a grocery shopping list in my phone and when I run out of something I add it to the list right away. My new phone lets me assign priorities and greys out the low priority stuff, which has been fairly helpful.
I try really hard to just have a text email window open for those "code is compiling, can't take a huge break but don't want to watch text scrolling" moments, switching between folders quickly lets me feel like I'm doing something. If I have an rss/blog/journal reader open, the "quick glance" isn't so quick.
Letting myself work on things for 5-10 minutes instead of trying to clear an hour or two. Watching half of a movie on DVD instead of trying to find 2 hours for the whole thing has also worked better for me.
For sewing: putting all the fabric and notions for a project in a single bag, which has led to not spending time trying to find that specific piece of trim or button while I'm working.
For cooking, I've found that doing all the prep work on ingredients before I start mixing or heating anything has reduced my stress.
I finally rearranged the kitchen cupboards to swap things around so I don't always have to get out the stepladder when I want things I use relatively frequently (specifically wine glasses). I also have managed to clear space in my freezer so I always have cocktail glasses chilling. :)