i didnt add the old discs becouse they can be dropped by creepers if a skeleton kills them

just make a simple farm where the skeleton shoots a flaming arrow and that flaming arrow then hitting a tnt and then blowing up in a hole with creepers

the nether brick blocks are actually craftable

basically if you smelt netherack you get a single nether brick

and if you craft 4 of them in one you get the block

any pillagers are also exclusive to structures but i forgot pillager patrols existed wich would make the bad omen potion the illager banner and the pillager itself to be found without structures but they are really rare so dont expect to get one easily

if i missed any blocks or mobs let me know

also i skipped the stronghold due to me also putting in that the end is a thing you can visit

but just know if you want to count away the stronghold then we have to get rid of these things

all of the armor trims

silverfish

mob spawners

the ability to go to the end

and everything thats exclusive to the end

as you can see almost everything we use daily in minecraft actually come from structures ofcourse there are a lot of structure less items but some of them are very rare without structures

maybe i will do a minecraft speedrun without looting any structures and see how far i would go and how strong i would get and the struggles along the way