I feel like, of everyone, I've probably spent the least one-on-one time with grandma, so mine likely wont be as deep or meaningful as others, but I have a few smaller stories to share.
The first time Dawn was left alone to babysit, I made a whoopsie, panicked, and called grandma (sobbing) and asked her to come over, which of course she did without hesitation. I'd dropped a full glass of milk in the upstairs hallway and the carpet was soaked, I was sure it was ruined and I was going to be in so much trouble. When grandma got here and found out why I'd called, she'd laughed at how I was "literally crying over spilled milk!" and helped clean it with a towel. She immediately made it no big deal and put me at ease, and stayed with us for the night to keep me mellow (even though Dawn was hurt that I'd taken away her opportunity to show how responsible and mature she was.)
When grandma stayed with us for a few months during chemo when I was in elementary school, I remember spending afternoons on the pull out bed watching soap operas with her and cuddling with our pet bunnies.
Going out with her first thing in the morning to wait in line in front of shops for the new Ty beanie baby releases.
One holiday (Christmas or Thanksgiving, I'm sure) I came back from the bathroom to show Dawn (who was sitting next to grandma on the couch under our stairs) that I'd just put my thumbnails straight through the lace of my underwear making two giant holes. Dawn, scandalized, said "You just flashed grandma your butt!" And grandma, without missing a bit jumped in with, "Do you know many times I've seen and wiped that butt?!"
A few years ago, not long after Kristen passed, Marina and I went over to grandmas and we all spent an afternoon going through old pictures together, she shared memories of time in Iowa and the back stories of pictures I hadn't seen before.
When I found out she liked Doctor Who and we started talking about characters and she shared how much she loves "the gay one" (Captain Jack Harkness) because he's "a hottie".
Some funny comments about Grandpa George on the video chat with Connie, Kellye and I the other night, and hearing her talk about bringing Connie home from the hospital and how tiny she was and that she could fit her in a shoe box.
For me, the prevailing thing with grandma isn't necessarily any specific/big memories, but rather what a collected lifetime of small, seemingly insignificant moments mean to me. She has been the embodiment of unconditional love and support, not through any major action or by ever having had to express it, it's just laced through every word and action. Genuine, unfaltering, love. - Carli