How much of your money would you like me to spend?
Here is my rack of test leads, BNC to BNC, N to BNC, PL259 to BNC, BNC to Crocs, IEC Mains Leads and a few real oddballs.
A box of assorted inter-series adaptors an connectors and oddballs.
A couple of BNC Tee Pieces is useful for when you want to connect two bits of equipment to the same point.
Not all signals arrive on a BNC terminated coax cable, so some BNC to 4mm plugs and sockets is useful.
And last but not least, ALWAYS usefull, some Croc Leads made with single wire rather than coax/screened cable.
Use them for power (low volts DC), signal connections where screening is not important, little friggs and jumpers where a temporary connection is required to make something work.
Of course, all this lot did not just appear at once, it has built up over 50 odd years of playing with radio and electronics.
JimB