Good, nowadays, to obtain line in fashionable devices? (8)
I believe the answer is:
'fashionable devices?' is the definition.
(trendy devices or appliances)
'good nowadays to obtain line' is the wordplay.
'good' becomes 'g' (abbreviation).
'nowadays' becomes 'AD' (AD, Anno Domini, as opposed to BC, Before Christ).
'to obtain' becomes 'get' ('get' can be a synonym of 'obtain').
'line' becomes 'ry' (abbreviation for railway).
'in' acts as a link.
(Other definitions for gadgetry that I've seen before include "Small ingenious devices in general" , "The making of small ingenious devices" , "gismos" , "Mechanical tools" .)