I prefer glass, but food safe plastic like seal-a-meal, or Tupperware are fine.
Target sells 2 gal glass jars for $13.49 but you can find gals on the internet for $5.
More info, cut and pasted from here:
"To cure the crop, you will need one or more containers made out of glass or plastic. Some people say plastic can impart a taste to the marijuana. Personally, plastic containers that some types of roll your own tobacco are sold in, have no negative effect on the taste.
Containers that have a rubber seal work best, but any type of container with a tight fitting lid will do. One quart
canning jars do a very good job if you are curing a few pounds or less. They have a rubber seal and hold 2 or more ounces of marijuana per one quart jar.
When curing quantities in excess of a few pounds, large (over 40 quarts) plastic
storage boxes
are recommended. They are not air tight, but will do the job when smaller air tight containers are not practical.
Gently place your marijuana in the containers (cut buds to size if the are too big to fit in the container) and put the top on. Store the containers in a dark area where the temperature is between 50-65 degrees and the humidity is between 40%-60%.
You will have to open the containers for a few minutes to allow moisture to escape by fanning with your hand. If any moisture builds up on the inside of the cap on your container, wipe it off. Do this preferably 2-6 times daily, at regular 4-12 hour intervals.
You should also re-arrange the buds by giving them a quarter-turn once a day. This will ensure that different parts of the buds are exposed to the air in the container. Keep up this routine for 7-10 days. When properly dried, marijuana will burn evenly when smoked in a joint (if stems are removed).
The taste will be as good as it can be, and the THC will have reached a point where it is ready to be ingested or stored. You can keep any marijuana that will be consumed within a few months (1 year maximum) in the same containers used for curing, without having to keep opening them to release moisture.
If the marijuana is to be stored for more than a few months, you can use a
vacuum sealer (designed for storing food) to seal the marijuana in an airtight environment. If stored in a dark area that is between 40-55 degrees F, the marijuana in vacuum sealed plastic will remain potent for up to 5 years.
Dry marijuana can be stored in a frost-free freezer, but some of the THC on the outer part of the buds may be damaged when frozen. A refrigerator is in the right temperature range but they tend to be humid (unless you can control the humidity).
If stored in an area of high humidity for months or years, even vacuum sealed marijuana can eventually become as humid as the surrounding air. This will necessitate drying it again before smoking. But, unless mold develops, humidity itself will not degrade the THC or make the marijuana any less potent.
Light will degrade some of the THC, so dark containers can be used for storage. If you place the marijuana in a see through container, it will have to be located in a dark area that is not exposed to light or high temperatures.
Always make sure to properly dry your marijuana prior to storage, if you grow your own or if the stuff you have is very moist. And remember that to preserve marijuana potency at a maximum level, keep any exposure to air, heat, and light at a minimum."
