OK - youngest daughter has to make homemade bird feeders to get a badge at Daisies (US Girl Scouts). To make them at home in the UK I would simply have softened (not melted) a block of lard and mixed in a load of bird food then re-refridgerated to set in something like a yoghurt pot threaded with string - Simple.
I can find loads of different types of Bird Feed but I am struggling to find a suitable alternative to block lard and was wondering if anyone has any suggestions?

Obviously it needs to be something which can be refridgerated and which will hold together when hung up outside!
Any help would be appreciated, as usual I have left it to the last minute and she needs to have something to show her Daisy Leader on Wednesday

Thanks