Observing nature is really fascinating, and it's everywhere - even in your fridge! Should you find something you can't identify try https://inaturalist.org/ which makes recording, sharing, discussing, identifying and correcting audio or still image media based observations easy and is of great utility to biologists tasked with understanding and environmentalists protecting our remnant biodiversity. Just be sure to mark cultivated specimens as 'casual'. Also a great lead-in for kids to many branches of science, structured thinking and (in the lead-up to Christmas) fun stuff like microscopy.