Take a class
No doubt you saw some things on Nakamise Dori that you hadn’t heard of before. You may have learned something new or discovered a new artform you’d like to explore. Most likely, whatever it was, there’s probably a class for it in Asakusa. From woodblock printing to cooking ramen, there are academies and private teachers galore, many just blocks away from the Senso-ji temple complex.
If you don’t already have a class reserved, don’t worry. Just whip out your phone and Google nearby teachers. There will probably be some that still have slots open before you leave Japan.