Apple Carplay Alternatives?

Hello everyone, I currently have a Toyota and it has a navigation display but it's just old outdated map stuff. I've looked around to see if I can implement Carplay into it but the options are Grom & Navtool and each goes for $500 plus.

I snooped around and found people using tablets but having trouble charging them. Is there anything you guys recommend? I don't mind adding an external display and keeping my stock display. Would like to stay stock if possible just need some recommendations, thanks in advance!

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