Hi, Ikea sell a linnmon tabletop that is 120x60cm, they also have a glass top at 120x40, so i thought that would be a good replasement for the glass used in Vanillas cage, the cage would be alittlebit more expencive, but it would also be around 1000sq inches!
you would need
2 IKEA linnmontabletop 120x60
1 IKEA linnmontabletop 100x60 (for the sides of the cage)
1 BESTÅ glass top, 120x40
and just follow valinnahamham's DIY video.
The cage will be alot more expencive, but it will also be bigger.
Plexiglass is also an option ofc.