I like a small phone or camera case on the back of the belt - no wear, plenty of room and works for most work situations.
For my needs, I need a bit more than is available on my belt. On the belt, I already have a multitool and a pager.
For the hip pocket, I have a small notepad (Lowes equivalent of the rite-in-rain pad but MUCH cheaper, cellphone, aluma wallet that has its guts ripped out so that it can contain more stuff than an altoids can, a small nylon tote from IKEA, a paracord lanyard containing a small pocket knife: Mercator, USB drive, whistle, AA flashlight:4 Sevens).
Thanks.
Conway Yee