I know the feeling :-) I got a new shelving unit with small bins for hats/mitts/boots. It took numerous weeks of endless redirection and reminders but my group of 13-16month olds have pretty much learned that those bins are not for them to empty. It was a long process...but in the end it works.
Can you provide appropriate things for the child to climb? Kids need to climb...some really, really NEED to climb. I had to buy things to let them do this in an appropriate way, just saying no all day doesn't help their NEED to do it and drives me bonkers...now I can direct them over to the climber or the rocking horse etc when they have that need. Helps my sanity.
That said...my 13month daughter old just discovered she can climb up on chairs, stand hands free and dance...and she can get up on the daycare lunch table and crawl around (it's only 18" high). So...now I spend all day redirecting her and hoping the others don't start to join in her fun. It's hard...it is so cute to see all the effort it takes to climb up on the chair (child size) stand up and do a happy dance. I'd love to take pics and giggle...but I know I need to keep being firm and consistent to end the behavior now (before the others join in).
The joys of toddlerhood!