First, think about your current mood, express it in a word, such as "carefree", and then think about what was the last thing you just ate, such as "taro pie", so your band can be called "carefree taro pie".
Guitar Club, you can change a routine. For example, you can choose any key in the name of CDEFGAB, such as "e key", and then add the last physical element you see, such as "copper string", so the Guitar Club is called "e key copper string".
ah ha ha ha ha ha.