Do you have a milk crate on your bike? Well, I have a solution for you!
Let's learn how to make the Bicycle Bumper Stickero-matic!! (Not the official name XD)
Step 1: The Stuff!
A drill, or other hole making device. (I used a 7/32" drill bit to make the holes.)
A piece of corrugated cardboard.
And a bike with a milk crate.
Step 2: Trim the Cardboard.
Step 3: Attach the Cardboard.
Then do the next top corner the same way.
For the bottom, I put the zip tie in the middle, instead of the corners. You can do it either way.
The trick here though, is to drill through the side, and bottom. (See the third picture.)
Then just loop the zip tie through, and tighten.
Step 4: Add Stickage, and You're Done!
I added some pictures of my baby ;) Yes, it's a dual suspension with a rear rack. It's one of those racks that goes around the seat post, instead of down to the dropouts. I zip tied the bigger rack (shown in picture #5) to it, and the milk crate is bungee corded to that.