As we might have mentioned before, one of the loveliest things about working in pedagogic circles is the generosity of spirit that colleagues display.
You see it here with the numerous contributions from our guest authors (and you’re always welcome to drop us a line with something new), but more generally there is a strong culture of sharing materials.
One relatively recent addition to this is the Active Learning Network, run by an international group that cuts across a number of disciplinary boundaries.
They have a good selection of materials and activities, plus the option to share resources of your own. Certainly worth some time to have a look and, hopefully, to contribute.