What research expenses to request for early career fellowship?
The following list is very subject dependent, but some items you might want to include are:


High Performance Computing time (e.g. comp-sci, physics, maths, chemistry etc) 
Lab or equipment hire costs
Research technician time (i.e someone who might help acquire data or do some other more routine tasks)
The all-encompassing "computer-consumables" (that covers quite a lot)