Still others perform yajña with materials, some through austerity, some by yoga practice, as also by spiritual study and Vedic recitations observing rigid vows and restraint.
Krishna brings in various religious and cultural practices, giving them yajµa status. His intention is to widen the nature and scope of sacrifice, upholding what many do in the name of yajna.
As their tendencies and aspirations are multidirectional, they relish the practices and wish to indulge in them. Some have a flair to be visibly pronounced in what they do. They like to offer seeds, plants, etc. to the blazing sacrificial fire.
Some embrace very hard austerities, persecuting the body. Even yogic practices become sacrifice. Some assiduously offer their Vedic study and practices, regarding them as the best sacrifice. The enlightened disseminate supreme knowledge, evaluating it as the greatest sacrifice. It is far more sublime, divine and spiritual.
Thus assorted are sacrifices, each held as best by its practitioners.