This answer is only from the Theravada viewpoint. It's likely that you can find more diverse meditation techniques in Vajrayana.
Shambhavi Mudra is apparently an eyebrow center gazing gesture.
Agochari Mudra is apparently a nose tip gazing gesture.
While these are not found in Theravada Buddhism, the closest thing to it is parimukham. Please read this answer ...
TL;DR: the Mahayana sutras like Heart Sutra, Lotus Sutra are not part of the Tripitaka.
For the Theravada school, the main scripture is the Pali Canon or the Tipitaka, in the Pali language.
Tipitaka or Tripitaka means the three baskets. The three are the Sutta Pitaka which is the basket on the teachings of the Buddha and his disciples, the Vinaya Pitaka ...
According to Wikipedia's Tripiṭaka article,
Tripiṭaka has become a term used for many schools' collections, although their general divisions do not match a strict division into three piṭakas.
The "three baskets" to not correspond to the Three Turnings of the Wheel of Dharma which is I think what the question is suggesting.
At least in the ...
The Tripitaka is one and it is divided in three collections of texts (pitaka) and the first one contains the sutras (sutra pitaka).
The heart sutra and the lotus sutra are not in the Tripitaka though, they are part of the prajnaparamita sutras that is a different collection of sutras, studied in Mahāyāna Buddhism.