How to solve the Spire of Insight puzzle in Crimson Desert

Puzzling out each riddle in Crimson Desert's Spire of Insight is key if you want to reach the top and access yet another Abyss Gate, leading to a different part of the skylocked region. Once you've worked out how to get inside, which I can help with below, you'll have three riddles to solve, each of which involves finding an item or two and dumping them in a bowl.

I found that the "place" command was super buggy when I did this, so I'd recommend walking right up to the bowl and simply dropping the item instead when facing towards it.