took back seats out, need more room Options

[FSX_Celica94GT]

so i took my back seats out over the weekend cuz i need more room to put stuff since i have a giant sub box in the back of my car. I need more room for my back pack and computer when i go to lan parties (noone ever sits back there anyways), but my question is, since theres absolutely no carpet underneath the seats and theres 2 dips in the back where the seats were, i was wondering what would be the best option to fill this in with? i was thinkin about gettin some carpet and just putting it back there, but then i decided i was gonna move my subs up so i can have an easier time getting my backpack out. Maybe a thick board cut to fit the back would be best? what do yall think?

[Clipsetuner]

I had mine out for months it was ugly but they had no purpose and just had to put them back because they took up too much space outside the car. Only thing I noticed is that there are X number of wires for the fuel pump and thats the only bare wires/looming out that I had.

I plan on using each dip as a place to mount each amp and having my car recarpeted to make one giant peice that flows from front to back, then gettin my 3 rear panels redone in CF and remolding some of it to make it look like the back seats never exsisited.

DTE