What other novelty cereals do you have or recommend?
Oh, don't get me wrong, most are shit.

like the Cap'n Crunch Sprinkled Donut Crunch and Cotton Candy Crunch weren't great, but it was still better then Peeps cereal.
But some that are worth it:
Cinna-Graham Toast Crunch
Strawberry Banana Cheerios, suprisingly
Hershey Kisses cereal is OK, but I prefer Cocoa Puffs
Hostess Donettes (Powdered)
Pop Tarts strawberry (better than the fruit-filled Shredded Mini Wheats)
Post Honey Maid S'mores is possibly my favorite currently-availble "sugary" cereal. Technically not "new" and doesn't seem to be a limited-time offer. It's the closest cereal to the old General Mills S'Mores cereal from the 80s or 90s that i loved as a kid...but that one was still better because the graham pieces were dusted with chocolate. This Post cereal is also a bit sweeter, i think, that that old one. Still love it, though. The Malt-o-Meal "Popeye" s'mores cereal is nearly as good, as this one, too. The Kellogg's "Smorz" can kiss my ass.
Reese's Big Puffs are actually a slightly lighter crispness/less crunchy than the original. Tastes the same, just a different "lighter" texture.
Reese's Puffs Cluster Crunch more similar to the big puffs than the regular Puffs
Cinnamon Toast Crunch Churros are fine, just not as good as the OG CTC.
Cap'n Crunch Caramel Chocolate Crunch...but it's really "heavy". Very sweet, and the caramel definitely makes it feel more like a dessert than most of these cereals already do.
Others that aren't very good:
Twinkies
Jolly Rancher
Drumstick cereal (original... the mint version is even worse...but either way, it's missing the peanuts you'd find on a "real" drumstick. Maybe it needs a little but of Peanut Butter Cap'n Crunch of Reese's Puffs mixed in)
Oreo Os. Weird aftertaste...flavor reminds me of gluten-free Oreos. Not the same as the old-school oreo cereal, I don't think.
I'd buy Cap'n Crunch Oops! All Berries more, but there is so much color,, it makes your #2s a super unfortunate color.