I like to grab 100s of pieces of unattended plywood & two-by-fours from a junkyard or not-too-dilapidated forest horror cabin or something and drag them back to my house. Then I assemble them using hammer & nails, or I climb up a tree and nail them across some branches. You will need a hotspot for wifi & a tarp to protect u & ur laptop in case of rain while u are sitting up there.

Some hip ppl might try to use a makerbot or w/e but to get any kind of height on the platform u will need a LOT of plastic.