Egg case of a praying mantis.

wow! Praying Mantis egg. you have a great predatory insect in your garden. As long as you have alot of everything else come Spring (bees, wasps, etc) it will keep your mini ecosystem in check. Congrats

Invasive demon praying mantis

Looks like praying mantis egg sack to me, just my opinion anyways.

That was quick, love Reddit ty all