Since its conception there have been many nature activities released on The Smart Happy Project that are accompanied with downloads for you to do at home.
All downloads as part of the Smart Happy Project are copyright under Creative Commons license.
This is the page to find them all the nature actvities downloads in one place. Each image will take you to the post for that article where there will be the link to download.
All these posts also feature in the blog section of the website.
The Wildlife Watch website has a blog that I have write for regularly. Their website is full of many excellent downloads and spotting sheets for wild and nature filled activities to get you and your family outside.