The items in question are in fact sports equipment, for an outdoor sport. Its a niche sport, we had to manufacture the equipment ourselves, so there is no standard way to move it.
The main problem items are the wooden bases for the goals. These are heavy, maybe 20kg each, and about 1m across, and there are 6 of them. They are hexagonal sheets of wood, maybe 2 inches thick, with a large block of wood in the centre on one side. We cannot put wheels on them as this would present a trip hazard during play.
There are lots of other lighter items too, mostly rods (roughly 1m long, PVC), hoops (1m wide, plastic), dodge-balls and a tackle-bag. We tend to have a fair number of people to help carry these, but if there was a way to move them with less people that would be good too.
The route is about 1km total and its half on the street and half over short grass. We move them twice a week every week. The current suggestion is to move them with a car, but the car would not be able to get very close and fuel cost is an issue. We can't afford to spend much on this.
Summary; Is there a cheap way to regularly move bulky, heavy things across grass and pavements?