You're in a cage and you've been shot by an arrow. Obviously things are looking pretty bad. You need some medicine if you hope to live.
When we need to remember the sound い we use the word "Eagle."
You need your medicine really bad. Then, you look up. There's an eagle (い) flying overhead. He has a package. It's medicine! You're saved!
Currently there are no similar looking kanji which exist in the WaniKani learning system