Hollowed out body with slot for battery

thingiverse

The original version of the body is a solid block. I didn't want to waste all that plastic, and I wanted it to light up. I kind of made things up as I went along, so I originally printed the Portal_Gun_body enhanced.stl and went to town with a drill a file. I later went back and created Portal_Gun_body enhanced battery.stl based on where I put the switch and battery box. Full disclosure I haven't printed the battery.stl file. You'll need to print this for the batteries: https://www.thingiverse.com/thing:456900. I scaled it to 102% to compensate for the battery wiring. I used ethernet wires. I found it easier to put the + and - on the same side and wire together that way. The OP has markings to put the +/+ on the same side. You'll need 2xAAA batteries wired in series, a switch (I used these https://smile.amazon.com/gp/product/B007QAJUUS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1), a green LED, and a cotton ball. Print the bell in transparent PLA, fluff up the cotton ball, and put it over the LED, then put the bell on. No resistor is required because the AAA's run at ~3.6v. You also need to print 2 blocks for the display screen to sit on. They go just inside the body on the switch side. Flip the print so the LED array is facing down. Use supports. Touching build plate if you're confident in your printer's bridging, otherwise use Everywhere.