Bolt Ladder aka AIDS

Bolt ladder up a blank slab to have fun practicing aid climbing.

Easy moves straight up the bulges put in a cam and start clipping bolts and cheating your way to the top with those ladder thingys. There's 1 janky rivet hanger in for fun but you don't need any fancy aid gear.

Prolly goes free at 5.14. But you'd deck and die if you fell onto the 1/4 bolt rivet hanger so don't try and be a hero.