Walmart VG
Humco Glycerin USP Skin Protectant, 6 oz - Walmart.com
CVS VG
CVS Pure Glycerin USP - CVS.com
Can usually be found where they stock skin care products.
Mix it with NIC and 10% distilled water and your good to go.
To figure out your NIC concentration use
eJuice Me Up - Best eJuice Calculator
You can also take some coffee grinds and cover it about a 1/4 inch from the top with VG and heat it to 150F for 2 - 3 hours then strain it through a coffee filter then take that liquid and plunge it through a syringe with cotton in the tip. That resulting liquid makes a good flavoring.
Stay away from any oil based kitchen flavorings or flavorings with additives. Those are bad to vape. An essential orange oil is OK as long as it's a natural essential oil. But be careful and come back to the forum and ask if what you find is safe before attempting anything.
A natural sucarlose such as what's found at GNC health stores are good to sweeten your mix but stay away from what you find in supermarkets. Those have additives that are not safe to vape.
But by the time you buy all that it would likely be cheaper just to order a few flavorings meant for vaping from an online vender such as bullcity.
Bull City Vapor - Best Prices on DIY e-liquid Supplies
You should do some research on DYI. I recommend
My blogs will give insight into all aspects of DYI, from steeping to what supplies to have on hand to a basic walk through mixing your first E-juice.
E-Cigarette Forum - dannyv45 - Blogs
Then read hoosier's blogs. These blogs concentrate on fine tuning your mix and give insight on additives.
E-Cigarette Forum - Hoosier - Blogs
Then read Boletus's blog's. These blogs concentrate on formulation of nicotine bases regarding proper calculations methods for figuring Nicotine concentration as well as safety.
E-Cigarette Forum - Boletus - Blogs
Then read Ginger's book "E-Cigarettes 102: DIY E-Liquid". It is a book which I've contributed to that delivers an in depth easy to follow guide in the art of DYI.
E-Cigarettes 102: DIY E-Liquid
I recommend viewing VPLive Vape Team Episode #82: DIY Safety and bookmark it for future reference. It explains safety in all aspects of DYI.
VPLive Vape Team Episode #82: DIY Safety
then read the stickies at the top of the page.
this will explain a lot of the how's and why's.