Everyone has an old blown speaker laying around right?
Well, rip the magnet off the basket and glue it to your ladder.
Screws will be nice and handy and stay in place wile you scoot it around.
Step 1: You're Already Done!
It's so simple I think the intro covered it.
Unless you want to know that I used just a dab of hot glue so it is semi-permanent.
Or that I used a hammer and a flat head screw driver to separate the basket and magnet. I don't know. That's what the comments are for. Magnets rule.