You can do many things to enhance or vary your smoking experience. One way to spice things up is to alter the filler for your glass base, by using something other than water or a mixture.
Ice
A very basic and simple way to mix things up is by adding ice to the water in your glass base. Allow the ice to cool the water before lighting the hookah. This will cool the smoke and make the hookah smoother.
Wine
A fun method for the over 21 crowd is to add some wine on top of the water in the glass base. Use this in conjunction with fruit flavors to sweeten and enhance the experience.
Vodka
Another trick for the 21+ bunch is to fill the glass base with vodka. This is definitely a bit more costly since it is not advisable to drink the vodka afterwards; however, this will intensify the head-buzz from smoking.
Juice
We don’t want to neglect the non-drinkers, so here is a tip for you guys. Mix lemon juice, orange juice, or another fruit juice into the water in your glass base to enhance your smoke. This is most effective, when used with fruity flavors.
Milk
A classic trick is to fill the base of the hookah with milk. The milk will create large bubbles and thicker smoke. It may also deepen your voice a little bit (remember puberty?)
Non Water Tricks
Not all tricks and enhancements are performed with the water.
Hose Freeze
A cool way to cool the smoke is to put your hookah hose in a freezer about 30 minutes before smoking. CAUTION: make sure that the hose is dry; any moisture in it will freeze and ruin the hose.