just get a tiny airtight container. check out 420 jars or tightpac. something like that is always better than a bag. see the reason why bags are bad is because moving bud around in plastic it tends to rub off all the crystals (what gets you high) and you dont want that. also a plastic bag isnt airtight and thats whatcha need. you could try just a mason jar because they are effective and cheap. if your bud is really crumbly maybe you should also find a humidifier which just needs a drop of water on it and itll keep your bud stcky, just be sure to open it up every couple days to less some moisture out. thats all i got, good luck.