Have you explored the TES resources website? There is a section focused on resources for teaching assistants.
You can find it here: tes teaching assistants
You can search and browse for resources in lots of areas such as behaviour support, supporting SEN,reading and phonics. Resources can be searched by topics – two are listed above but there are many more. You can add your own reviews of resources and submit your own resources to share with your colleagues. You can also follow on twitter – @tes_TAs.
Evaluating the resources and strategies you use and adding to them can involve you in thinking reflectively about learning and the factors that have an effect on learning.