Unsolved single-goal challenges

As requested by Pannen, here are some ideas of cool things that may be possible, but haven’t been achieved in practice.

• Clipping from the bottom area of Wiggler's cave to the top area, or vice versa
• Grabbing Ukiki without pressing B
• Collecting WMotR Capless and/or Cannonless
• Transport cloning with Wiggler or Skeeter
• Pulling off a transport clone with 4 simultaneous pushers
• Picking up the cannon bob-omb on the same frame as leaving its radius
• Collecting the new impossible coin
• Killing the mystery goomba and collecting its coin
• Collecting the red coin in BitDW at the start without using the ! Switch
• Getting infinite coins in CCM
• Cloning in LLL (maybe with fall damage instant release via falling from HSF)
• Getting the TTC upwarp
• Moving during timestop in JRB (to get shell clones)
• Grab a bob-omb fake during boiling
• Vertical PU death in LLL
• Beating SA in one irl breath
• HSWK between towers in TotWC
• Crashing the game by triggering death barrier before activating the TotWC starting textbox
• Putting the Ukiki that steals your hat on the monkey cage, so the Ukiki that opens the cage will murder the other one
• Bring the mama penguin to the bob-omb buddy to trigger text glitches
• Survive in a vertical PU with a shell clone released in it