Running out of ideas

How do you keep your child from getting into/onto stuff that they shouldn't?! He's 20 months old and a MEGA climber. We had to take down a lattice baby gate that he used to climb onto the kitchen counter. He hasn't had a crib since he climbed out of it several months ago. He will climb on drawers even though the locks don't allow them to open all the way. He climbs out of his playpen without anything to help him up. He climbs the cupboard lock we have on some little door handles so he can get onto the desks we have blocking off the electronic cords. He will move toys so he can get a boost up onto something he is trying to climb.

I feel like we're going to go totally broke buying stuff to keep him away. Or we will have to just get rid of all our valuable and breakable stuff.

YES we watch him and make him get down if he starts to climb something we don't want him climbing. But the little turd is FAST and I still need to be able to go to the bathroom and make food. And he will head for what he shouldn't have if he thinks I'm not watching him.

It's like, we think we have it figured out but then a week later he's found a way to climb our solution.

I know we will eventually figure it out again and someday find a setup that works. I feel like we're pretty close; probably just a taller cabinet thing that he can't climb as easily in place of the one he's getting up onto now. So I guess this is more of a rant than anything. But dang. What did you do when your kid kept causing mischief even with baby proofing measures in place? Just keep rearranging? Stick a bunch of stuff in storage until they could behave better? I've had to turn on Sesame Street just to be able to chill for a bit so I can stay sane.