Originally Posted by
Giant Doofus
Not a crate, but what about the Wald folding pannier baskets?
Wald 582 Rear Folding Pannier Basket. I've seen a fair number of bikes sporting these and they seem to work very well. I also rode a rental that had them and was pleased that they don't rattle at all.
The Walds do work well (the knockoff lookalikes do NOT, they fall apart under load, but the Walds are solid) but they are so solid that they end up being pretty heavy.
I had two of them on my commuter before realizing how much extra weight two Walds add, now I just use a Basil basket that hooks onto the rack rail, easy to take off and on and I can take it in and use it as a shopping basket as well. Toba makes similar baskets for less as well.