I use dollar store plastic funnels. Tried a dryer sheet to stop powder from sticking but did not have any luck with that. Wiped them down with rubbing alcohol and the powder no longer sticks.
FS Reloading is one of those suppliers I depend on when I need Lee based products. A new owner has recently assumed the company as the original person took ill and could not carry on. I know the transition is complete, have not yet had the need to procure anything from them as of yet. That being said, you will find a funnel that accompanies the Lee Powder Dispensers using the link below. This fits 1, 4 and 8 lb jugs of powder.