I purchased the eyes and cauldron from Dollar Tree, but have also seen them at Target, Party City, and Michaels. On the eyes I used a Sharpie to write random numbers on them.
Students pick eyes out the cauldron and record them on the pages attached. There is a page for:
-rounding to tens
rounding to hundreds
-rounding to thousands
-rounding to the underlined digit
-create your own story problems
I used this resource in a small group math center and my students LOVED it!