Hi Basel Brush, there are quite a few playgroups in Basel itself which may also suit you. I have just been here since last August, but have some ideas. We also go to a playgroup in Crossroads church in Reinacher strasse every Tuesday morning. I'm sure you have probably heard of Open Door and Centrepoint (if not, there's info on them here somewhere!) and also Kindermusic and babygym, both a bit expensive though if you have twins. What part of Basel do you live in?