Hrm, if there are three of you, then you need room for three times your items. Maybe this idea Ikea Hacker is something for you: Landing strip storage with "face recognition"?
If you tried to copy that concept, you just need some sort of bench/storage (again Ikea, but really just to give you an idea):
* Expedit shelf 1x4 or Lack shelf 1x4, turned sideways, if you want you can put drawers in: Expedit drawers or Knipsa basket, and you can also attach legs to this shelf/bench. It doesn't have to be a shelf, be creative. Maybe a 3-drawer chest will work, maybe a shoe storage bench will work...
Then, put a few hooks for coats and three storages for small items above or next to that, so that each one of you has their own hook, shoe rack, backpack hook/shelf, and small item storage for keys, sunglasses, hats, toys and so on.
* Small item storage suggestions: See my post above, or something like these: Allamåla wall basket, 3 of Förhöja wall cabinet, or a Lack wall shelf. You could also mix and match, for example for you and your husband, you each have one Förhöja, and for your son it could be those Frog pockets from my last post ... well, you get the idea ;o)
If you think all this storage will be too messy to look at from the rest of your room, you could solve this by visibly separating the reception area from the rest with a big plant or several, or with a very light curtain hung from the ceiling, or just by putting a colorful rug or runner there to mark the area as entrance area. You could also visibly separate the area if, for example if you got a bench like that expedit shelf I mentioned, you put it 3-4 feet away from the wall, parallel to the wall. The wall can still hold your coat rack and maybe some of the small storage solutions, while the bench can be sat on from both sides and separates the entrance area from the rest.
If it is absolutely impossible to attach anything to your walls, you could also go for an upright standing Expedit 1x4 shelf (just for example), or two, and then attach hooks and if you like, the Frog thing or whatever to their outsides on the left and right.
I think if lots of stuff always gravitates towards the entrance area, it does not have a home. Maybe also put up a small shelf (or whatever) to hold puzzle books and everthing that is actually regularly used in your living/dining room, along with a small bowl on top for earrings and other tiny 'lost' things. Then make it a habit to clear that bowl every day to return everything to its original home. -- This is in keeping with chacha's idea from the Boxes of Stuff thread, where you determine how you use your space to find out where items should be 'at home'.
Oh, and also: Yay for starting to declutter, aari! :o)