Dnd3.5/pathfinder We have been playing an epic level campaign for about three years time and amassed a considerable amount of loot, to the point where we plan to create some kind of magical stronghold. Many of our enemies are high level mages and clerics of Lolth that could be worth more alive than dead. My plan is thus to create a maximum security prison that also serve as a source of magic energy, since we are at the point where gold is plenty but xp is not.
My plan is thus: A prison shielded from etheral, teleportation and physical entrance. Using stronghold builders guide book the prison will be a single room cell with continous effect of mind fog and feeble mind, the walls will be force and in the center of the room will be a symbol of pain to keep prisoners and intruders pacified. I plan on using the nipple clamps of exquisite pain and symbol of pain trick together with a self-resetting trap that casts distill joy on every occupant once per day. The prisoners will be held in check with shackles of silence. What I lack right now is a method to keep them confined in permanent bubbles of force, and fed. The plan is that once a prisoner is put into the prison, there will be no contact with any one until the day of their release, each cell is suposed to be a self-contained unit keeping the occupant fed and waterd and in a state of blissful stupor, while at the same time milking them of ambrosia to fuel further magical creations.
My question is thus, how do I solve the problem of separete self contained force bubble cells and keeping the prisoners fed and unable to use spell like abilities, extrordinary at-will abilities and psionics?