Yeah it becomes kinda an addiction. I got my printer about 4 months ago and have already spent around 1/2 the price of the printer on filament.
Kid, learn (and fast) a valuable life lesson: nothing comes for free in life; no one hands out freebiesā¦for freeā¦ Thereās always some trade-off involved where you have to give something back. On Makerworld to get "freebies " you have to share your 3D designs that would attract people and entice them to print them. To make money for your printer you need to sell eggs. Depending on your location, like Mcgee said, if in the US, then your eggs are like gold nuggetsā¦ at this time
My suggestion to you is to save the egg money you need to buy your 3D printer, take your dad into town, buy him a pint of beer (like 2 men would do) and stop by the local 3d printing shop to get your printer. You pay for the printer and your dad for a few spools of filamentā¦and youāre good to go.
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what drakko said above really.
Want to warm him up? If you have chickens and eggs Iām assuming farm? so Farmers?
Use tinkercad, openscad, etc to make farming tools, gadgets and life improvements - there are a TON that could help out. Even if it takes a while to get the printer to can always start getting ideas in your head to easy daily life.
you actually donāt need to print anything by the way, just in tinkercad you must think like the nozzle. .04 is .04 so walls are what? one pass? two? three? spacing, building everything must be thought of in nozzle āmathā so to speak early on when learning to print things accurately.
If Iām making a thin wall I need to think, ok, 04, 08,1.2, 1.6 to be safe as each pass is the correct nozzle yada yada rather than making wacko math like 0.9638 weird in between number wall sizes where the slicer has to go mad trying to figure out how to cut the walls to pass them and draw it to that size. Obviously it can do it if that is the exact size you need but it really isnāt good to make it sweat like this when there isnāt a need (most of the time).
this is just a quick extra 2 cents, really though times are rough, carrots and meat cost a fortune and putting food in everyoneās plates are a priority - so if you want nice shoes or a fancy car, gotta grind! If it turns out someone pays something for you itās a gift, say thank you and you pay the next round.
How it works, But you are on the right path, keep at it!
PS: before buying a 3d printer buy a 9$ plastic digital caliper tool. THIS I use more than the printer, daily, hourly, every 3rd minute when designing or making something. 
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