I could not get the Ikea Fado lamp so I designed this base for a Blow Mold Light Kit that I got on Amazon.  It requires 2 M3 x 16 bolts and 2 M3 nuts to mount the Light kit.  The nuts should fit in the holes in the bottom. You will have support material in these holes but it is easy to remove by pushing an allen from the top.   Just print out the Death star Globe from Kiloler's File.  Kiloer file is a great print.  The link below are for the Blow mold light kit and light bulb I used.  They are not affiliate links.  Enjoy!

https://makerworld.com/en/models/1579995-death-star-lamp-ikea-fado-17cm#profileId-1662691

https://www.amazon.com/dp/B0FDBH8V2X?ref=ppx_yo2ov_dt_b_fed_asin_title

https://www.amazon.com/dp/B06Y27W7NZ?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1