I'm a chemist, so naturally I LOVE to mix things.
I have a big plastic canister type jar that I use to mix my conditioners in because I'm a product junkie.
Plus I hate all the different bottles and jars underneath my sink.
Sometimes I forget what all's in there, but tonight I mixed Humectress, 2 or 3 ORS Replenishing packs, half a jar of Elasta QP DPR, some Mega Silk, and god only knows what else until the jar was full. Then I poured in some EVOO and castor oil, and mixed it with a spoon until it was uniform. That huge jar will probably last me a month or so of deep conditioning.