my firsat project with my daughter it the Hat, but she wants it offset, no on the Pi, , , is there a cable , if so reference please, , I have a diffuser for it, , , can I just bolt it onto a wooden board with the diffuser over the top,
Mini Black HAT Hack3r might be your best best: https://shop.pimoroni.com/products/mini-black-hat-hack3r
Take special care to make sure it’s connected to the Pi like the one in the full-sized Black HAT Hack3r photo found here: https://shop.pimoroni.com/products/black-hat-hacker
In answer to your second question, you could indeed bolt it to a bit of wood, as long as you run some beefy wires between the required pins from the HAT and the required pins on the Pi.
The pinouts for the Unicorn HAT are here: http://pinout.xyz/pinout/unicorn_hat