I love collecting strains. I have a pretty big mason jar and I put all my weed in there. I want to start buying smaller amounts so I have more strains at a time but that can get a lot more pricey. What I usually do is buy halves, quarters, and sometimes 8ths and throw them all in the same jar. Does anyone else mix strains in the same jar? It's not hard to pick out what you want, I can identify every strain I have by looking at it through the glass.
I LOVE having a choice though, depending on what I'm feeling and what kind/time of day it is, I can usually pick the perfect strain/mix for any occasion. Right now I'm sitting on some Island sweet skunk, purple wreck, blue dream, blue ak, true blue, ed rosenthal, and GDP. I also like having a collection of stronger stuff; i've always got some hash, keif, and caviar (bud dipped in oil and keif) for "special occasions" but these special occasions usually turn out to be 80% of the time I smoke haha...it's so hard not to put some hash on top when it's sitting right there...
I also put labels (stickers) of the strain name on the mason jar...pretty soon it will be completely covered in labels, there's barely any glass showing anymore.