No special tricks, but at 14mos she's probably old enough to listen and learn the words "hold still" long enough for you to button. She probably gets a kick out of watching you sweat it out. Mine did. I finally got just stern enough with her telling her to not wiggle that after a couple of times she held still long enough to snap and then we played!

I didn't have a changing table with my DD (currently 26 months) so when she was going through that super wiggly stage I would hold her arms down with my legs-- just to get her diaper on! She thought diaper changes were a game, I guess, and that it was her job to run away... :)

It does get better once they understand that you will play with them later, but right now they need a diaper!

Distraction! Give her a book or toy.

Trish

We count snaps....

We played "ssss-NAP!" games w/ each snap.

As many of the posters said, distraction is probably your best bet..I always have a basket of small objects for my son to hold, special ONLY FOR DIAPER CHANGING TIME.

And like one poster said, this is the perfect age to use the words HOLD STILL, WAIT UNTIL MOMMY IS DONE, talk to your baby like a person. They understand a LOT more than you think! A toddler this age can begin to understand rules and the word NO! DOn't be afraid to use it.

Happy Parenting...

~Jen, Early Childhood Specialist and mom to 19mos old and #2 due in Feb

Mary T..I do the same. When my son is wiggling around, I stretch his legs out flat on the floor, and lightly put mine over his. Gives me just enough time to snap the Onsie before he wiggles free.

My son is now 2 and I still have to distract him to change his diaper. I just let him bring one of his cars with him and he plays the whole time. He doesn't even realize what I am doing...

Yours is 14 months so may be too late for you but in case it helps someone else:

A Routine is key.

With snapping onesies, clipping fingernails, etc., I started when she was an infant singing Twinkle Twinkle (or ABC song). It got her to focus on something other than what I was doing. It got so routine and familiar to her, that I never had any trouble with these sometimes daunting tasks.
She's 4 now, and she'll start singing twinkle twinkle when she sees me get the clippers out! :-)

I had to laugh at "hold still"; those exact words make my 16mo dd move & wiggle even more! I even tried "help mommy change your diaper by holding still" ~~~ useless. Same goes for clipping nails; I can only get it done when she naps. It got so bad that I carry clippers with me, hoping she falls asleep in the carseat, so when I get home, and she's still sleeping, I snip away. Not so much fun in the winter of course, but it works for me! I have no tips for snapping the onesies, just patience, which I have little of, and holding her down while trying to snap them. It's never easy...

I stopped using onesies and use the regular t-shirts instead. I also tend to dress my son in outfits that are easy to pull down when changing his diaper. I'm trying to simplify my life without all those snaps!! hee, hee.