The idea of a permanent chastity cage is SO thrilling, where did you start with that? Can you safely do needle play through cock/balls?
To have my cock locked for a while can be very arousing, especially my orgasms are quite intense straight after chastity...
My first needles were through my cockskin and glans... In general needle play is risky, especially if done to the balls! im working safely and so far i just have tiny marks on my cock to be honest...
Sometimes i just feel my balls, because of too intensive extreme play possibly or maybe other reasons as well - but that's a matter of taste and depends of the perception, i would say...
Hope i was able to answer your questions so far.