I've been thinking about this for a while now, but I haven't actually put any of my plans into motion yet. I know there is another flavor called 'Flaked' by Aisle 7 which is a Frosted Flakes type, so that's a pretty similar premise. It's definitely doable, I just haven't gotten around to tackling this.
I think the crucial flavor that would make this mix would be TFA Kettlecorn, perhaps in conjunction with the right other grain/cookie flavors. I think if you find the right combination of TFA Kettlecorn, FA Cookie, TFA Graham Cracker Clear, and TFA Acetyl Pyrazine (we all know that 'corn chip' flavor you get if you overshoot the mark with AP), you'll be able to evoke the sweet cornmeal flavor you're looking for. You can play with it from there by using TFA Rice Crunchies/FW Rice Treat, TFA Frosted Donut, INW Biscuit, CAP/TFA Waffle, and/or other grainy-bakery flavors in combination to zero in if the initial base is in the ballpark. Depending on how 'frosted' you want those flakes, you can crank up the FA Meringue, FA Marshmallow, TFA Lucky Leprechaun, & other sweet flavors. Same goes with the cream flavors depending on your preference for milkiness. Some flavors can affect 2 or 3 of these categories at once, like TFA Cheesecake Graham Crust or TFA Lucky Leprechaun, so keep that in mind too. Some 'Golden Grahams'-type recipes have been shared here in the past too, and I think those would probably be a good model to work off as well, and if this works, it's pretty likely you could get a Rice Krispies vape the same way. If this doesn't work at all, One-on-One, who makes some marginal-but-otherwise-unique cereal flavors, sells a Frosted Flakes/Corn Flakes type flavoring, so you can try that route if this approach fails.
Corn Flakes: TFA Kettlecorn, FA Cookie, TFA Acetyl Pyrazine, TFA Graham Cracker Clear/CAP Graham Cracker, CAP Sugar Cookie, TFA Rice Crunchies/FW Rice Treat, TFA Frosted Donut, TFA Captain Cereal/FLV Crunch Cereal.
Cream/Milk: TFA Bavarian Cream+TFA Vanilla Swirl, TFA Dairy Milk, FA Cream Fresh+FA Vienna Cream (diketone-free), TFA Dulce de Leche
Frosted Sugar: FA Meringue, TFA Lucky Leprechaun, FA/CAP/TFA Marshmallow, TFA Sweetener/Cotton Candy/EM
Here's a total shot in the dark, one possible way of approaching the recipe concept I outlined above -- keeping in mind I've never used TFA Kettlecorn before, just:
Sugar Shards:
TFA Kettle Corn - 4%
TFA Graham Cracker Clear - 4%
TFA Acetyl Pyrazine - 1%
TFA Bavarian Cream - 3%
TFA Vanilla Swirl - 1.5%
TFA Dulce de Leche - 0.5%
FA Cookie - 1%
FA Meringue - 1.5%
FA Marshmallow - 1%
This recipe could be a total trainwreck, so don't judge me if it is -- but I'd love it if someone started developing it & gave some feedback, because it'll be a while before I can order Kettle Corn and get a start on this, so if the approach is wrong, I'd like to help reformulate it in the meantime. Post back if you'd be willing to try and help.