Useful Product IDs
JST connectors are great for small motor connectors, and wiring boards to other boards. They're 2.54mm standard spacing, specced for 3A per terminal. They are commonly found on RC batteries acting as balance connectors.
Molex's KK series connectors are used for the same thing as JSTs. Fan connectors for PC mainboards use KK series. There is a Multicomp clone of them availabe on farnell for ~10p less per connector.
- 2.45mm Easy release terminal block - 8 way 
- Nice Barrel Jack - same size as arduino