Ghostbuster Ghost Trap Conversion

I had an official Ghostbuster Ghost Trap (the empty sealed version, no opening doors, no lights or sound). So decided to convert it into the Afterlife RC Ghost Trap. I had to cut out and spilt the sealed door in to doors, Then fitted them on to wooden dowling so they could open and close. Next installed a couple of servos, a servo controller and a remote activation receiver which came with a keychain key fob. For lights I had an old Los Vegas sign that flashed different colors, so removed and fitted them in the base along with batteries to power the servos and lights. Made a semi clear lining for the inside of the Ghost Trap so the lights would show through then lined the sides and doors with black packing foam. The Spirit capture components were just bits I found in a box of old radio gear (a bit of artistic license used as I couldn’t find any photos of the inside of the official trap). Then bought an RC big wheel car to sit the Ghost Trap on. That’s the project so far. Tried to keep the cost down as much as possible. Think I’ve spent around £60 on the build (Trap, RC car mainly) that I couldn’t find in the many draws full of stuff that will come in handy one day! 🥴 Im looking for a way to install Sfx of the trap opening, activated and closed at some point in the future.