Izinto zokonakala ezonakalisa imvelo ngokuvamile zisho isigaba sezinto zokwakha ezingagxwa ngokwemvelo, ezigaywe, futhi ezibunjiwe yimvelo ukuze zingakhiqizi imfucuza eqinile. Ezinye izithako zemvelo ezinjengezinkuni, i-bamboo, kanye neminye imikhiqizo yamaphepha esetshenziswwe kusuka kumicu yemvelo, okunye okukhishwe ngemvelo njenge Chitin, zein, njll. Ngaphezu kwalokho kunezinto zokwenziwa zokucekelwa phansi kwendalo zokwenziwa.