Afternoon naps are a good time to practice WILDs without prior sleep. Binaural beats have apparently helped some people but I have not had any luck with them yet. Then there are the hemi-sync files from TMI - I think I have all of them:

Hemi-Sync.jpg

You can also use the REM Cycles in LDIII to play MP3s or recordings during the night when you might be dreaming.