I'm sure those scalextric bridge supports were about 5 quid each
and they were just little plastic triangles
(
Bloop Fri 16 Jul, 22:10,
Fri 3 Aug 2007, 0:07,
archived)
still a rip off
but nothing else worked so well
(
Bloop Fri 16 Jul, 22:10,
Fri 3 Aug 2007, 0:12,
archived)