You can get something as simple as shown in the link below for a fuse/ground panel....

Six fuse panel shown.
http://www.delcity.net/store/ATC-&-ATO- ... ad/p_11262You have choice of panels with 6 or 8 or 10 or 12 fuse positions and there is double the number of ground positions if you need additional grounds.....
Looks as if you have 8 circuits run already... I would get the 12 position panel and you will have room for growth (oh yes, it will happen) ...
Panel also has two main threaded terminal for wires going to battery..... You may or may not put master fuse on line for battery, its your choice....
As other have mentioned be sure fuse/ground panel is accessible in event fuse blows...
Also there are some new cool ATC/ATO fuses the contain LED's so if one blows it lights up to tell you which one has "faulted"
http://www.delcity.net/store/ATC-&-ATO- ... s/p_800317This fuse panel is probably the simplest way and least expensive...
Dale
Lives his life vicariously through his own self.
Any statement made by me are strictly my own opinion.
You are free to ignore anything I say if you do not agree.
