@mpershan
Awesome post. Now you’re going to make me spend my afternoons in Norway trying to find those cool plastic cases to hold index cards. Also, Beast Math is amazing—totally worth the ridiculous shipping I paid.
@mpershan
In Japan people use "ring cards" like these, available from stationary shops. Do they sell these in the US? 単語カード-暗記カード-DIY挨拶カード-暗記効率アップ!-50枚×4冊/dp/B06XZ2VDH1