1) 3-speed step-through mountain bike turned commuter, rescued from the dump.
2) Raleigh Scorpion that used to belong to my dad, currently awaiting some drop bars.
3) Rhino 'Tribe' 24" BMX, cast off by a neighbour and restored by me.
The first two may exchange some parts at some point- the Scorpion may become a drop-bar 3-speed, with the step-through gaining some North Roads and the Scorpion's 2x5 derailleur gearing.
As you can see, I've never spent a significant amount of money on cycling. The most expensive item was probably the 3-speed hub and associated spokes (both from ebay.)