Seriously, I found this to be about the handiest toolbox I have ever used.
Step 1: Simplicity Itself!
Then get some of your wife's jeans. I suggest that you use only the jeans that she has placed in the "donate box"... and NO the washing machine is NOT the "donate box". Anyway, if you used your jeans, what would you wear? (Note: It makes no difference who's jeans you use. You could even use dungarees, or Kakis, or slacks, or chinos, or shorts, koolats, peadlpushers, or overalls)
Cut off the legs, cut out the (Ahem!) "Nethers", and open the zipper and button.
Pull the jeans up over the edge of the bucket. If they are too tight, leave the zipper open. We'll deal with it later.
Pull the waistband of the jeans tightly around the rib of the bucket.
Step 2: Pop Rivits, the Handyman's Friend
Now fill that sucker with tools. You could even put a plywood seat on the top for sitting, or use as a work surface.