We rotate sensory bins about once a week right now. I am always trying to stay on top of the seasons and plan a little bit ahead to have some seasonal items. These items are always used for numerous things (like counting and language objects) but they always get thrown in the sensory bin too. For us, this is a fun way for my littles to play with these objects and learn their names, with a little pretend play thrown in. The sensory aspect seems to keep them engaged for a little while, which means more time exploring these objects!
For this bin, I used:
Chickpeas
You could definitely jazz this bin up more, but this is a great starting place and was plenty of fun for my kids just how it is!