Use old saline solution bottles for my cleaning chemicals. The small nozzle allows for precise placement of small amounts of bore cleaners and other chemicals without waste and won't spill when knocked over. Simply use masking tape and mark the bottles with a marker. If those bottles are too big you can use those that came with eye drops or nasal spray. These are small enough to put in a range bag, bag, or pocket. I also use airline mini booze bottles for sampe purpose, but I do prefer the small nozzles on the others.

Nice tip Steve!