sensations as meditation object Can sensations be a meditation object like breath? if yes how do I practice meditations with it?
Vedananupassana (contemplation of feelings) is part of the Satipatthana. There are 3 types of feelings:


Pleasant feeling or sensation,
Unpleasant feeling or sensation,
Neutral feeling or sensation.


In Vedananupassana you focus your mind on the sensation to see how and when it arises and how and when it passes away, keeping your mind steadfastly equanimous without getting attached to the pleasant sensations or averse to the painful sensation or ignorant of the transient nature of the neutral sensations.

This is a very concise description of the technique. It is best you take a course to learn it properly. Following are some pointers:


https://www.dhamma.org/en/index
http://www.internationalmeditationcentre.org/global/index.html