Reddit mentions of Empire USA Mini Pool Ball Set, 1.5-Inch

Creatine Monohydrate Powder 1kg @ $10.87 ... $0.054 per 5g dose

Instantized BCAA Powder 500g @ $25.18 ... $0.252 per 5g dose

Citrulline Malate ... 500g @ $23.05 ... $0.092 per 2.5g dose

L-Carnitine ... 250g @ $13.54 ... $0.081 per 1.5g dose

Caffeine ... dirt cheap

Mini Billiard Balls ... $15.50 ... put 4 of these in a large container ( I use an old bb.com casein tub ) and shake, rattle, roll to mix. Helps to break up any clumps, and won't chip / leave particles in your powder.

I use the above products. Creatine I put in my post workout shake, the rest I use in my pre-workout, flavored with sugar-free drink packets from Walmart + 1/2 serving of gatorade powder.

( if you don't have a small 0.01 gram scale, get one, they are cheap and extremely useful, especially when dosing caffeine ... amazon, ebay, powdercity, etc )

1. Get an old whey powder tub.
   
   
2. Put your powders in it. Measure them using (dose) x (# of servings) = ingredient total.
   
   
3. Put 2 or 3 of these mini billiard balls in the tub with the powder.
   
   
4. Make sure the lid is sealed well. Use tape if required.
   
   
5. Shake, rattle, and roll for a few minutes, or however long it takes to mix your powders well. It doesn't take very long.
   
   
6. ????
   
   
7. Profit
   
   When it's time to take your preworkout, use a digital scale w/ a tare function, scoop out 1 serving ( dose of each ingredient added together = 1 serving ).
   
   Works really well. Billiard balls are hard, and designed to be smashed into each other, won't contaminate your product.
   
   My preworkout has something like 20 ingredients in it, and this method works fine.