DIY projects are amongst our favourite things here at Lifehacker. if you have a young child and you want to share your passion for DIY, MakerParent is a fantastic resource where one parent is collecting activities to do with kids.
You can browse the projects a number of ways: simple (building a fort, lifting an ice cube with a string), popular, recent and cost. You can use any two of these as filters at a time. The projects are also categorizsd by what age they are appropriate for, making it even easier to get the right stuff for your kid.
Each project has a short description, the apparatus needed and its rough cost, and a link to where the project was originally found on the web. Register at the site and you can bookmark projects to find them later. And yeah, you're also invited to share projects you found around the web.