Quote Originally Posted by divingbiker
I've got a pair of grocery bag panniers from REI that paper grocery bags fit in perfectly.

http://www.rei.com/online/store/Prod...HP_CYCLING_TOC

I use one to carry my clothes etc when commuting to work.
I got a pair of those at my local REI, and they work great and hold a lot. The minor inconveniences about this particular model I found were:
1. I had to be careful how I positioned my feet on the pedals, or I would sometimes hit my heel on the front corner of the bags. Not a problem when they're folded up.
2. The snaps for holding them in the folded-up position are on the front and back, about half-way down in the open position. In the folded-up position, they are closer to the bottom than the top. This gives a poor mechanical advantage for actually keeping them closed.
3. In the folded up position, the tops of the bags are a few inches above the top of the rear rack. Combined with the top gaping open slightly (see #2 above), I found I sometimes got my foot caught on them when dismounting from the bike.
4. Although not as heavy as metal baskets, they're still a bit heavier than I like to drag around all the time. Combined with the dismounting issue (#3), this means I took them off for most of the time, and only plan to put them back on again when I'm going shopping. Plus, I got a handlebar bag for carrying smaller amounts of stuff.

Overall, a worthwhile purchase, though.

Rebeccah