Don't if you'll like this or not but how about
having two words to start with and you have to change one of the words for another which will still go with the other.
Hope that makes sense. Example
street corner
you could then have
street lamp
or
corner shop
So to start,
life...........line
first prize
first lady
lady luck
good luck
good luck
good shot
feel good
feel good
feel free
feel free
free time
free time
time flies
time flies
sand flies
sand flies
sand people
sand people
sand storm
sand storm
sand castle
sand castle
castle tower (just me again?)
castle tower
castle bridge
castle bridge
sand castle - aaaahhhhh. I used to like 'em.
sand castle
castle keep
castle keep
keep quiet:010:
keep quiet
up keep
up keep
up wind
Up wind
Wind Breaker
Wind Breaker
Wind Tunnel
channel tunnel
channel tunnel
television channel
television channel
television programme
television programme
computer programme (usually spelled program in IT)
commputer programme
programme agenda
programme agenda
hidden agenda
hidden agenda
hidden talent
talent scout