I do freeze pollen quite a bit and I simply harvest the anthers when the pollen is nice and fluffy, drop them into a small glassine envelope (such as many seed exchanges use for seed storage), then put them into a small sealed container, and put them into a non-frost free freezer. I have stored pollen for up to 2 years and had good results. I don't use a desiccant, but then I live in an area with low humidity. I use the pollen directly out of the freezer, but avoid taking the same pollen in and out of the freezer repeatedly. I actually think over drying the pollen (with a desiccant or long term storage in a frost-free freezer) is a bigger danger than too much moisture.
I freeze lots of dayiily pollen in centrifuge tubes that I got from Earth Star, but they are no longer selling them. However, you can get them from Amazon! And I also got the little storage boxes to house them in from Earth Star, and there are two sizes -- store up to 50 or up to 100. I haven't checked on the box availability now, but here is a link to the tubes from Amazon:
And believe it or not, I'm halfway through my 12th box of 100, although I only store 70 per box as I leave three vertical rows empty so I can get my fingers in there more easily. This is a great way to store frozen pollen, and they say daylily pollen will keep like that for up to three years and still be viable. And every time I need some I take the tube out, rub it back & forth quickly in my hands to get it warm, use it, and then immediately refreeze it -- and it works!
Edit: I just checked, and here are the storage boxes:
However, I always paid something like $8.95 for a 100-slot box and under $6 for a 50-slot box, and around $5 for 100 1.5 ml tubes. But these examples are only from Amazon, and I'll be they could be found elsewhere on the net for less.