Gone but not forgotten by me

At Aussie role-playing conventions in the 1990s, there used to be light-hearted games based around Tiny Teddies biscuits, where the players would bring a box each, and the biccies would function as their life points. The GM would instruct them to scoff a handful when things went wrong. None left? All over, Red Rover.

There were also games (term employed more loosely here) in which you constructed a colourful fantasy creature out of Play-doh, agreed on its combat abilities with the GM, then all of the participants fought their critters in an arena. I think it was called Claydonians. If you moved into melee range/fired a projectile and rolled a hit, you might be allowed to, say, poke the enemy with one finger. Creatures whose doughy bodies became too mangled were kaput. Last critter standing won.

Trollball, from the "RuneQuest" universe, was also once a thang. I still read about cons where Jugger - from 1989 scifi flick "The Salute Of The Jugger" - is played, so perhaps that can be considered the successor to Trollball. I'm sure I'm forgetting other oddities from the conventions of old. Do they stage multiforms in 2025?