Thank you all sooooo much - what brilliant ideas! suspended hula hoops it is... and little sister is giving me her list of what she wants inside... they are both getting quite excited and we've had to have a little sit down to explain that this is all going to take a really looooong time to do.
Best I get the birthday/Christmas present list made double quick! Happily everyone wants something homemade (mostly quilted items but some soaps, candles, etc) so I can indulge myself without feeling guilty.