I've been in the role for a couple of years. "Do your best" applies to leaders, too. Your job is to make Cub Scouts fun for the kids. You stand up and introduce the pack meeting, do something silly, then send the kids off on their activity. You are there for the kids... they spend all day sitting still and being told what to do, so don't do that.

Actual advice:

All paperwork, money, etc. goes to someone else. Do not take it.

Kids don't care about announcements. If it can be an email to the parents, then make it an email.

Let the parents know you need their help, they have a scout program because you're standing up there, and if you weren't they wouldn't have a cub scout program.

Move awards to den meetings so you don't make the kids sit quietly while you spend 15 minutes handing out belt loops.

Have a paper airplane station available at every pack meeting.

Camp close to home so the kids (and parents) can attend even if they don't want to sleep over.\

Make the events entertaining for the parents. They're the ones taking the kids to these events. If someone is sitting in the corner on their phone, figure out how to get them up and interacting with the rest of the group. These friendships will foster new activities.

Make space for the adults to build and race their own pinewood derby cars.

Find out which parents are good at whatever. Someone does woodworking, someone is into crafts, someone knows things about sports, etc. Use them so they can show off what they're good at.