well people have used 128gb cards in their 3ds and probably 200gb cards work too.
but you need to fill your card with about 30-60gb of stuff on the 128gb card if you gonna use it from Blank and then install stuff, this is because the 3ds gets funyy reading the card if too much space is free
I would recommend nothing larger than 128gb, do you really need more than that? (Most games don't even kick over 2gb, most are ~1gb)
To answer your question, any SDHC compatible SD card OR microsd card with the proper SDHC adapter will work.
I personally prefer write speeds over space.
64 GB should be enough for what the 3DS has to offer, they average about 1GB each. But if you want a lot of space to try out games or future proofing 128 GB is more than enough. Still I think 64 GB is the perfect size.
Wow! Complete rom sets. That's a lot of games you're never going to play. I used to think that way too. Until I realized, it's just not practical. I never owned a 128gb card. It would be cool to own one though for wii u or android. hahaha.
I don't like popcorn at all; bland taste, and it got ruined for me because of high school - the school cafeteria reeked of microwave popcorn for several days...utterly revolting, couldn't even enter the place it stunk so bad.
Not lollipops; what Americans would call "candies" or just "candy" IDK. Before the pandemic, cinemas used to have buckets of different ones - sour cola, sour watermelon, and many others; I used to get a scoopful of two or three types into a paper bag to have throughout the movie.