Today in the backyard:A grove, or brown-lipped, or banded wood, snail. Hell, no wonder we have the scientific names, otherwise we'd go crazy with the common names. This is Cepaea nemoralis. (As always, this amateur's call is tentative on identifying the ooogy members of terrestrial Gastropoda.)
A European species, this was introduced in New Jersey in 1857; the snails are sometimes garden and flower pests; they are sometimes pests in upstate NY vineyards. Personally, I wonder it would go with a nice red or a crisp white. They are very polymorphic in coloration, but the brown lip is almost always there.
You can see here the film from the seal it makes when it attaches itself to something for the day. This one was actually attached to a collapsed garbage bag.
You may want to cover the kids' eyes, but this Wiki page on the snail love dart is pretty funky and mindblowing. Cupid turns out to be a snail. They fire darts at each other before copulation.