Yes you can talk to them, you can meditate on their sigil,
you can vibrate their names like mantras,
you can just focus on specific God and meditate like that,
you can offer your energies to them by being aware of sending it,
you can create something for them and offer - like drawing,
offering something beautiful like flower,
also I have heard from other member that smelling flower and with exhalation direct that fragrance to specific God, this pleases them, and yes it works I tried it myself, works miraculously(thanks for brother or sister who shared it)
You can also do ritual, there is specific ritual for higher ranking Gods I gonna put it here:
https://josrituals.org/
You can do also your own ritual how you feel, but main thing is to give them energy and they give same in return.