I did it online this year. Resisted the urge to ask for a new form for each child. Resisted the urge to actually think about the questions, i.e. "How many bedrooms does the dwelling have?" - Does this mean "how many rooms are currently used as bedrooms?" or "how many rooms could be utilised as bedrooms?". <
Decided that I was happy to have the information made public in 99 years - just in case there's anyone around who is actually interested and can read whatever media these are archived on!