Have a four year old with his own gear. He (& I) want him to carry it round just like everybody else.
Anyone aware of manufacturers of ski bags, boot bags etc for kids equipment?
We bought the Transpack junior model for our kids. It is too large for a 4-year old to lug around, but he'll eventually grow into it. The Transpack is a nifty sack to store the helmet, boots, gloves, etc. for car trips and to organize items for summer storage. IMO, it is one of those items that isn't cheap (even on sale), but worth it because of the convenience.
When my kids were four, they couldn't carry much of anything when they were finished skiing. Good luck!