Little help - Car boot barriers

[Shantara]

Hello!

So, I was wondering if there is such a thing as a boot barrier? I've found that Tam really likes being in the boot of the car, while I'm at work, as opposed to being tied on the yard, but likes the door open.
Is there anything I can put so she can't get out, but can have the boot open? We have a Toyota yaris.

 

[CorvusCorax]

Yes you can get a cage put in but they're pricey to have custom made.

 

[blackcob]

https://www.barjo.co.uk/tailgate-guards

Sometimes available second hand via http://agilitynet.co.uk/clutch/fleamarket.htm