There wasn't any time to get any made. Maybe in a future event if there's ample funds to go around for getting something like this done. Besides, T-shirts are specific to individuals, these events are organised with least amount of time in between and unless someone is willing to sponsor these T-shirts, I'm unable to get them done for now. The market in Nigeria isn't as widespread. We're talking hundreds and thousands of kms between Steemit communities here. :) Not as simple as organising a weekly meetup in your own city.