As a first year Webelos leader, I was faced with this challenge as well. What I decided to do was to create a sign up sheet for the school year showing each Webelos activity badge section based on the Webelos Scout Leader Handbook and broke them out by month. Within each month I listed the estimated meeting dates.
Then, I had a parents meeting where I told them I couldn't do it all and would need them to take a look at the list, review the different month's activities and then sign up to host at least one meeting, more if possible, in months where they had an interest in the activity. I got very good feedback. Two weeks ago, within Showman, one of the moms, who is a professional singer, hosted the meeting and had one of her bandmates there with instruments, microphones, etc.. It was a ball!. This week, in Craftsman, one of the dads, who is a plumber, is hosting the meeting. Another dad has signed up for two meetings that have to do with Fitness and Athlete. And, so on.
It works on several levels. First, I'm off the hook for four or five weeks, at least. Second, the parents really like it. Third, the boys are given an opportunity to "show off" their homes, their parents and their leadership. It becomes kind of a bonding experience for the den.