As our little ones get more impish, I am wondering what techniques you use now and plan to use as they get bigger as a means of behavior modification.
Growing up, neither dear husband nor I had parents that spanked so we won't likely go that route either. (No judgement against people that do spank, just had other things that worked on us such as sitting in the corner, losing privileges, etc.) Right now, an "ah-ah-ah No No No" is working with Fifi for the most part. When she pushes the limits (i.e. continues to try to put a toy into the rabbits' cages) said toy gets taken away and put on a high shelf or she gets removed from the room she's causing chaos in (hooray for baby gates). She always gets a verbal "explanation" ("you can't put things in the bunny cages" or a "no you can't pull on the curtains bc they will fall down") with this so she (hopefully) connects the discipline as a result of her action.
As she gets bigger, we will explain things more as she comprehends more. Maybe time outs will work depending on her temperament. As a parent, I hope to not argue back and forth and keep my frustration in check. We're not much of yellers but I do hope my husband can learn how to be more stern with his voice (he's not so good with that with the dog even. hahaha) so she knows when he means business.
What's working for you?

Re: let's talk discipline
My dad was a spanker for major infractions, but not for most things. I am not completely opposed to it in very limited circumstances like when they do something really dangerous and you want to drive the point home, but I don't know if I would be able to actually go through with it.
As he gets older we will likely continue doing what we do with DS1. I usually give a warning and then put him in time out. I'll take toys away, if he isn't playing nice with them. Some times if we're having a really rough day I'll send him to his room for some alone time. He'll go read or do puzzles in his room until he is ready to come back and behave. I always make him talk about why he is having a rough day and what he can do to change his day.
@MelissaMiso That's the route we're trying to go too. I don't judge people who spank their kids on occasion, DH and I were both spanked as kids, along with LOTS of other people I know and nobody to my knowledge is psychologically damaged for it. I just found it gave me conflicting messages, and I don't want to get into that with DD if I can help it.
For now we redirect/take things away, explain (as best we can for her comprehension right now), and have done quick 1 min time outs since that's all her attention span can handle right now.
Married DH 7/30/11
CSC arrived 5/7/12
CHC arrived 6/2/14