Efficient bike parking/storage that younger kids can handle? We have a smallish 2-car garage on our house, which with both cars in it, is difficult to put all 6 of our family's bikes in as well.  My bike is typically hung from some hooks in the ceiling, and I have a hoist on the ceiling for my wife's bike.  However, I have not found an effective way to get all the kids' bikes in.  I have tried hooks such as these:

 

which lets them fit, but I find that the bikes fall out of them quite easily unless the bike is lifted all the way off the ground, which the kids lack the ability to do.  I thought of putting in more hoists, except that there is not enough ceiling room left to do so (without coming down on a car, that is) and I'm concerned with the kids securing them wrong and having one fall (damaging the bike, the kid or a car).  

Does anyone have an innovative way to store multiple bikes in a tight space that does not require significant lifting?  The kids are able to get the bikes up on a rear wheel, but not typically to lift it enough to get it in a hook that would keep it off the ground.
Depending on your garage arragement, I would consider sth like this, but for vertical position:

mixed with hoist:


with this kind of elevating mechanism:



If for horizontal, can be combined with this ( I suppose there is enoug space on the wall if you tried with hooks):