I recently got into meditation, and discovered that you could use it to WILD! I thought I might share it with you guys, because this technique is the easiest one and most effective one I have encountered. The meditation technique I use to WILD is the following:

I close my eyes, and place my attention only on the center of my forehead (between my eyebrows) and on my breath. That's it.

Why does it work? Because that is where the pineal gland, the third eye, the minds eye is located. By imagining sensations at that location, you directly stimulate it. The pineal gland is the gland that secretes melatonin, which is one of the hormones responsible for dreaming. You can increase stimulation the better you can concentrate on it and the better you can induce sensations or vibrations in that area. The better your imagination, the more focussed your mind, and the less you keep talking to yourself inside your head all the time, the better this technique works. The longer you use this technique, the faster you will get into a WILD. It's like a magic button you need to push to get into dreamland.

This is a 5000 year old tantra technique, as the story goes, one of the 112 meditations given by Shiva to his consort Parvati. Still works like a charm, and it's the easiest WILD technique out there IMO. This one directly induces dreaming by stimulating the gland that secretes the dreaming hormones. I also already managed to go into dreaming during meditation without laying down, all I need to do is close my eyes and concentrate for a while. The litteral translation of the tantra technique is the following:
"With intangible breath in center of forehead, as this reaches heart at the moment of sleep, have direction over dreams and over death itself."
Hope this helps!