Full concentration...

Both Abbie and Pippa have found a Knex present under the christmas tree. Today after all family had gone, they started building.
We weren't sure whether Abbie would like this type of present, so here's was a slightly simpler and containing less pieces than Pippa's. We shouldn't have hesitated, here she is putting the last piece on her ferris wheel...
She loved it.
Pippa's construction is slightly larger, it is the roller coaster.