If your reasons for flexi-time schooling are because you feel that there are aspects to education which cannot be offered by schools, then the Big Wide World Approach to learning (more outdoors time, more time with a greater variety of places, more surprises and unplanned learning, perhaps as much 'wasted time', but also more intense learning time) is for you, and this is what it might look like:--

Mending bikes

Eco-shower by the Thames

 Minstrel show

Giving voice

 Home-made jewels

In the stocks

Funky music

 Building a model home

 Re-enactments

 Guerrilla gardening

Community learning

 Dissecting a porker