mcnobby:
This person has connected CE from the nrf to ground so that it is always in receive mode - I dont know if this works or not
It definitely won't work if you connect it to GND. That would lock it in standby-I mode.
It might work if you connect it HIGH and you only ever need receive mode. I never tried it ... (maybe I should)
PS: 6V to power the Tiny85?
There's a lot of very suspect things on that page.
I know, I would like to get to the bottom of this ATTiny85 spare pin thing, I have a serious application 
I also found this... Nerd Ralph: nrf24l01+ control with 3 ATtiny85 pins which only uses 3 lines to drive a nrf24l01 from a ATtiny85.. worth a read I think.. and possibly a few experiments !!
mcnobby:
I also found this... Nerd Ralph: nrf24l01+ control with 3 ATtiny85 pins which only uses 3 lines to drive a nrf24l01 from a ATtiny85.. worth a read I think.. and possibly a few experiments !!
3 pins....plus a load of external components.
If you're going to do that you might as well use a Tiny84. It'll be smaller overall and you'll have more pins left over.
one resistor. one diode, one cap... I dont need the LED as I am running from 3.3-3.6v
Thats NOT 'loads' of external components to me 
mcnobby:
one resistor. one diode, one cap... I dont need the LED as I am running from 3.3-3.6vThats NOT 'loads' of external components to me
Well, OK, not "loads"...
I have 2 x ATTiny85's with NRF24L01 working as a TX/RX pair now..
Tonight I will be starting work on the WS2812 led....
wish me luck !