My son is 14 months- We have no intentions of actually potty training him anytime soon. He has so far been uninterested in it minus waning to open and close the lid!

But, I'm just curious if (and when) any of you started just introducing the concept/exposing them to a little potty/etc. I'd be happy to buy one and just have it around but not sure when is normal to start the introduction? Thanks!
Re: Introducing the potty?
C is 15 months and we've introduced it already. She comes with me when I go and I ask if she'd also like to go in the potty. She pooped in it once about a month ago, and now she sees it and just shakes her little head. If I notice she's going poop, I'll also offer the potty. More head shaking, lol. No pushing, but definitely reminding her that it's there.
Married DH 7/30/11
CSC arrived 5/7/12
CHC arrived 6/2/14