Ian Stedman has a page full of information on Amiga power supplies and different hacks and adapters. You can use the information to do a quick and dirty hack using the cable from your power brick. You should be able open the brick and remove the cable without cutting it.
http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_PSU/amiga_psu.htmlIf you want a neater looking longterm solution PicoPSU is good option since you can fit inside the case the only external box is a neat little AC adapter.A 60w kit with a genuine PicoPSU fairly cheap at $35 and will supply more than enough with being as excessive as normal ATX supply of these times.
Ian sells adapters which include a header for a on/off switch.
http://www.ianstedman.co.uk/Sales/sales.htmlIf you decide to go down this route ask Acill if he'll solder some wires to the internal side of the PSU connector ready for fitting into the adapter.
