I try to meditate daily -- but I often miss it. My meditation is usually 10 or 20 minutes.
My most frequent form of meditation is either repetition of the name of God, or of gods, and pondering the nature of the Divine. Prayer, I don't do very often. Sometimes. I don't know if I believe it has any actual external effect, but it does have an internal one. That's good enough for me.
I have two altars in my home, one upstairs and one downstairs. The one downstairs is dedicated to the genius loci and to the Supreme Absolute: Īśvara, Wahegurū, Shangdi, Heaven, whatever one wishes to call It. My upstairs one is for personal reflection, with Buddhist prayer cards, pictures of Hindu deities, etc.
Idols, yes. I have an image of Lord Gaṇeśa in my living room, and some images of Siddhartha Gautama (the Buddha), as well as Guan Yin (the Chinese, feminine version of the male Avalokiteśvara), and some pictures images, one of the Hindu goddess Kālī, and one of Kṛṣṇa in his Universal Form.
I offer incense at any or all of the pictures whenever I feel like it. I burn incense even without offering it to icons.
I have my own little rituals, but none from any of the paths I draw from. I do what feel right.
Study texts, yes. I do. A lot. Probably my favourite method of devotion.