Has anyone tried this before?
I was curious if it might be possible to farm the Hammer Suits from the second Toad House in Ice Land, since that house is guaranteed to give you that suit and it is restored every time you get a Game Over.
And it turns out that - you can!
I tried this on my own copy yesterday and I could actually get 3 of them from that very same Toad House by constantly getting Game Overs and revisiting it.
This was fairly easy to do once I had beaten the first castle and cleared the rubble from one of those first pipes, since this allowed me to jump straight to stage 4.