I use a turkey baster to suck up the fluid from the master cylinders before working on the brakes or clutch. Doesn't have to be sophisticated. :-)
Yeah, using a shop vac does not instill confidence and the education stuff I linked to (autoshop101) has some sort of tool that uses nitrogen when working on these things because they say introducing compressed air into a fuel is dangerous. I'm not sure why the older manuals talk about shop air purges but I guess in concept hooking 43 psi to a saturated fuel canister is a bit like a supercharged engine waiting for a spark.
'91 Pickup - Imelda / '08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'98 Rhygin Juke SS / '12 Gunnar Rockhound 29 / '16 REEB Dikyelous
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein