IKEA - BUSA, Play tunnel, , No assembly required;Press together to save space when not in use.Crawling helps the brain to sort sensory impressions and develops motor skills.
Growing Up Kids Tunnel Vision Removable Wallpaper York Wallcoverings Wallpaper Kids
Tried and true top toys for a one year old! Play tunnel is great idea!
Runde's Room: Optical Illusions in Art Class - an easy to complete art project that students will be proud of i like it because op art with illusions and colour pink and green on illusions
Picture of Cheap DIY childs Playset tube/Tunnel.on top of the monkey bars
Play Landscaping - Infinite Playgrounds this would be cool for the little kids to crawl into!
How to build a tunnel Fromm blue barrels. Also, the idea of burying the blue barrels as steps!
Tutorials and ideas on how to create magical living structures