Is there any unusual and unheard of ice cream topping that you could recommend?

My father liked Maple syrup.

Garlic paste, ketchup, shredded bark from white birch trees, ear wax

I saw an ad for bacon flavored icing the other day.

I think cinemas should have a horror themed “day after saturday” promotion.
They could call it I-scream sunday!

Crumbled bacon.

Not really, but I have had pizza with cashews…amazingly good.
My custom ice cream moment is adding extra chopped walnuts and mini-marshmallows to my rocky road, to make it even rockier. lol

My mom liked beer and ice cream. And I’ve had bacon in cinnamon ice cream which is yummy.

Cardamom, of course! On Vanilla ice cream. Try it, you’ll love it, but just a few sprinkles or it will over power it.

Instant Coffee granules.

I like crumbled meringue on top of my ice cream :)

Really good balsamic vinegar on vanilla ice cream is delicious.

Peanut butter or ground cinnamon on top of vanilla ice cream. Not sure if I would recommend the two together, but on their own they aren’t too bad.

Nestle Quick powder is delicious. I know that isn’t so unusual, but most people go for the syrup and the powder is a different taste and texture.