Have your considered looking on etsy or international sellers on ebay, theres a few nice ones on their, which are also plastic/rubber so will wipe clean!
Depends on your budget though my pikachus cost me 20 quid as they were difficult to get hold off and I ordered spares after I run in with an astra owner who decided to theive my original overnight!
I will say ive never had an issue with kids nicking them the cable ties tend to do the trick unless an evil astra driver with a vendeta is after you lol!