Just an idea but maybe a small form factor would be an option, they are small and hide-a-ble but at least you can pick what goes in them. I have an all in one I bought for a very specific, light lifting task and I would never buy another unless it was a Mac and thats because I am a self professed Apple Sheep. But the AIO I have is soooooo limited. Maybe some of the higher end ones are much better
You see when you have an operational engine, it turns the wheels giving you the ability to run into shit. If your car ever had one of those you'd understand what I'm getting at.