Cally, is there a girl version of Matchbox cars?
Yep. It's called Matchbox cars. Gender nonspecific IMO.

Missy E can go for ages on her duplo...secret is you have to sit down, set some up, start her playing, then walk away once she's busy & engaged. Our other endless amuser (be prepared for cleanup tho) is the kitchen sink. A few plastic containers, some bubbly detergent and she's away.