Involving parents is vital. One of the best things about scouting (from a parental perspective) is that my son and I have had more focus for our fun together. Our pack is great about giving parents the opportunity to be involved.
One thing that can help is to have new parents leaf through the manual for a few minutes and pick one achievement they feel they are really well-suited to helping the kids with. You might find someone who is a chef, a carpenter, a thespian, a police officer, or an artist. Whatever! There's going to be something that person can look at and say "sure, I can