These Charcoal Arabian tablets are ideal for burning resins, herbs, incense granules or hookah/shisha. 
 
To use is easy, light an edge and it will light across the complete surface and stay lit until it has burnt out. Each clean burning charcoal piece will last up to 60 minutes. Ensure that you place the charcoal tablet on a heatproof or ceramic surface for safety. 
Perhaps you could create a kit with some Resins (see below) enabling your customers to have the full package.  
 
Easy to use, each tablet lasts up to 60 min, foil wrapped.