what has been your favourite product over the years of bieng an engineer?

Question: what has been your favourite product over the years of bieng an engineer?
- Keywords:
  favourite product,
  product
Asked by eugine the puff & elementalix to Matthew, Neil, Paula, Pete, Philippa on 11 Mar 2015.
- Pete Symons answered on 11 Mar 2015:
  
  Hi eugine the puff and elementalix,
  
  I have answered this (sort of) before so please see the link below, hopefully it answers your question;
  
  /safetym15-zone/2015/03/10/what-is-the-most-significant-thing-u-have-made/
- Neil Taylor answered on 11 Mar 2015:
  
  Hi!
  
  Wow, good question! I think one of my favourite products are made by a company called Aubin. They have invented a range of gels that have many smart uses! For example, they can create gel versions of a device known as a “pig” (http://en.wikipedia.org/wiki/Pigging) to clear blocked pipes that have a changing diameter… They have a video here to explain (http://aubingroup.com/pipelines/evo-pigs/evo-pigs-overview/).
  
  Hope this helps!
- Philippa Jefferis answered on 13 Mar 2015:
  
  I love the Tunnel Boring Machine – and the word boring doesn’t mean dull in this instance! It’s used to dig big tunnels, like that of Cross Rail (Going underneath London at the moment). It has allowed us to build much bigger tunnels, and much more safely too!

Question: what has been your favourite product over the years of bieng an engineer?