Quick Amazon search turned these up. Can't vouch for them personally but they seem to meet all your criteria.
Yes to the cravings and nausea. To deal with cravings, I’ve been chewing licorice sticks. Not sure about the insomnia because I was also having that early on so I’ve been drinking sleepy tea and having a Benadryl an hour before bed. Nausea I just started getting this week.
Don't know if anyone's mentioned this but licorice root is a great way to deal with the "oral" side of things. That's what got me through it. I still use them when I'm nervous. http://www.amazon.com/African-Chew-Sticks-Licorice-Pound/dp/B001HHFLM2
>Does anyone else here eat wood?
There is actually edible wood and it's quite yummy.
I used to eat it a lot when I was younger. You can just buy them on amazon:
https://www.amazon.com/African-Licorice-Sticks-1-Lb/dp/B001HHFLM2
Tooth cleaning/ chewing/ flavor
Bonus: it even has a pic of op.
I buy licorice chew sticks at the market and they're pretty good (if you like licorice anyway).
Try chewing these instead:
http://www.amazon.com/African-Chew-Sticks-Licorice-Pound/dp/B001HHFLM2