I have combined @adjenda with @waiting for, I just put wf after the persons name.

I find it useful to combine @office and @errands because they both often involve the same route and taking things with me.

On both of these I found Memo on Palm helpful because it will sort by A to Z and I just enter the place name and the item or the person's name and the item and they will appear on list grouped with other entries for that person or place and I can see then that a stop in a certain area of town is worth it or that I have quite a few things to disucss with a given person..