I read something about weapons what every can made in home !
1. Molotov cocktail - you moust only have a glass bottle , something flammable like benzine and rag. You moust pour benzine to bootle than poke a rag. And burning this but when you throw this in tank you moust aim in air intake over the engine. See photo
http://www.opisybroni.republika.pl/koktajl.html so now i know why that is the beast wapon of partisants.
2. Sack with cement - yes very impresive. Cement is a very good AT weapon. When you are in the bulding on the 1 floor you can throw this cement sack on tank what go on the streeat near bulding. You must aim in air inteke and when the sack drop on tank should crack and cement should fill air filters and tank can't drive should be easy to destroy.
http://www.opisybroni.republika.pl/cement.html
3. Armoured agricultral tractor - easy to made on the chasis of normal tractor like this from foto
http://www.opisybroni.republika.pl/panzertractor.html
here is write this vehicles were in serial production with name "Gepard" meaby during war in Yugoslavia or somewere in africa.