Organizing foreign language into palaces

sorry if this is already posted, but I’m wondering how to organize my foreign language mnemonics that I’ve developed from Anki. I feel this will help me to access a variety of words such as having a dictionary on hand. should I organize by letter, by category (such as education at school, cooking in the kitchen, sports at a tennis court?). the issue with the latter is the fact that objects already exist there that are already tangible. Do I remember the physical items and add “imaginary” ones as well? Example such as remembering items in my fridge, how will I have room to add the imaginary ones too? any tips on organizing this would be great. Go raibh míle maith agat! (Thanks a thousand in Irish)