I have made the grape yo yo hot mats. you cut a circle about the size of a mayo jar lid. fold over about 1/4 " and baste around put bottle cap in middle and draw up basting thread until snug. like a yo yo fasten off thread sew yo yo's together to form a cluster of grapes. I crocheted 2 leafs and stem on top. but you can sew some.

I remember my mom having those. I bet she made them too.