@ChrisGPackham Thought it was only fair as its Mothers day to show you my Mums article on your talk too!!

Pour into cut down bottle, with cap secured with the aid of vaseline, a blob of plasticine & @aptanet #bbcbang

Give it a stir and mash #bbcbang

Add some wood pellets......ie cat litter! #bbcbang

Start with the water #bbcbang

For all budding "little Jems", Aaron & Scotts recipe for a mini @bbcbang ice boat

See how it all works out for @bbcbang at 7:30pm tonight on BBC1 and on the red button afterwards

The real @bbcbang pykrete boat

If it's any consolation to @bbcbang theirs didn't last any longer; Lego Yan abandons ship!

Afloat, just!

The boys launch their pykrete boat, complete with Lego @bbcbang crew

Mini pykrete boat made by my boys, inspired by @bbcbang