Sozobe is correct: ideally, there should be some computer play--though video games are unnecessary. Computer literacy is and is likely to remain a life-skill.
The site I like for younger kids on a rainy day is RED FISH, which has NO directions. The young visitors simply hack their way into all kinds of creative, imaginative stuff. My first visit, I composed a brief piece of music (which was truly awful!), drew, painted, shifted geometric shapes, etc., etc. Our older daughter turns her young daughter (age 3.8) loose in the FISH occasionally, and our granddaughter loves it. It is, without any directions, fairly close to a free-form play area. Also, it is squeaky-clean. Nice, safe on-line environment.
www.poissonrouge.com
Oh, yes. You can play in French on this site as well as in English. Not too shabby!