I have recently become a new dad. My daughter has learned to drink from the 'sippy cups' but she always wants to drink from a regular cup... and often it doesn't work very well I notice that many of the caps for pop bottles and containers are universal, so perhaps a 'sippy style' only top that I can carry around and attach to the pop or juice containers as needed.

I have recently become a new dad, as my daughter was beginning to crawl around and now starts to learn to work she often falls and comes close to hitting herself on our furniture (e.g. coffee table). I think it shouldn't be too hard to create some type of semi-permanent hardening foam, that one could spray around sharp edges of wood / plastic. The compound would need to form a good seal but also be able to be easily removed when needed without doing damange to the underlying...