The Seven Martial Arts of Munya

Just catching up on last night's episode where Munya mentioned a few times he does a number of materials* arts - does anyone happen to know what any/all of them are?? Tried a google I mostly just got Taskmaster as a result lol

*Edit: autocorrect made a typo of materials instead of martial but leaving it there under the pretense he's actually a blue Peter master of arts and crafts that will later be aptly showcased in a task :p