Hammock bed - this gave me an idea. wouldnt it be fun (if i was rich) to have a huge kids playroom with a built in indoor trampoline for the kids to jump! (kinda like where this hammock is- floor level- but tramp! I want this one day :)
Log Bird Feeder - 23 DIY Birdfeeders That Will Fill Your Garden With Birds (my note: I haven't looked at all of these, but at least one is a terrible idea. The window birdfeeder -- birds could fly into the glass and hurt themselves.