Micro Machines Pocket Playsets
Now these were cool as they were modular meaning that you could connect them up together and create a huge play set or just take one on your travels and set it up anywhere.
There was a house, hospital, police station, drive through bank, fish and chips drive through, motorbike shop, city dump, airport, hotel and bridge among the many sets that came out.
Again, these were around a fiver and each one had roads, so you could connect-up and drive round the whole place and when you finished you took it apart and packed all the pieces up, folded it shut and could put it in your pocket. Excellent stuff!