Here are some of the things I have ordered:
NFC RFID tags. Last lot I got were about A$0.26 each and can store about 1Kbyte of data - things like web page link address, calibration data.
2DW232 low noise temp temp compensated dual zener reference diodes (10 for A$2.65).
2mm 1.5m length Soldering Wick CP-2015 (A$0.97 each)
SOP16 SSOP16 TSSOP16 To DIP16 0.65/1.27mm IC Adapter PCB Board (I got 50 for A$4.60). Great for using SMD ICs in a 0.1" pitch breadboard circuit.
VETUS HRC40 anti-magnetic tweezers - a 7 piece selection pack for A$7.99. Maybe clones, but actually very good.
Heat Gun Nozzles Air 3/4/5/6/8/10/12mm for 850 Hot Air Soldering station - $1.00 + 29c postage for set of 7 nozzles.
12 piece thin guitar pick pack A$1.33. Use for opening plastic cases, phones, tablets, etc
Short MicroUSB to female USB full size connector A$1.00 Use for plugging USB memory stick into phones and tablets.
Fake Hakko tip for my fake Hakko 936 soldering station - A$1.00. The real tips are better, but these still work pretty well.