The Cactus of Strength is also a giant exhibit in Banjoland ( in Banjo-Kazooie: Nuts & Bolts. You can earn an achievement by driving a heavy vehicle onto the button in front. The cactus is also important during the fight with Metal Mr. Patch, in which you must push Metal Mr. Patch into the cactus in order to deflate him again.
"The Cactus O' Strength was a Jiggy-awarding Witchyworld feature in Banjo-Tooie, rebuilt here by L.O.G. to challenge players to ring the bell again. What an achievement that would be..."