use an old floppy disk

I rather not fool around with anything. Lost eyesight doesn't grow back.

Get some glass used in a welding shield.

#14 Welding glass in a welder's helmet will work too, that's what I plan on using.

thats the day after my BD =0

I'd highly advise against using those cheap cardboard 'glasses' as they tend to be mighty flimsy.
If you want to directly observe the eclipse, go for something that..

a) is stable and fits snuggly, preferably shielding your eyes from the sides, as well.

b) has 'glasses' or more precisely filters that have a surface layer containing aluminium, chromium or silver.

Eye damage is mostly caused by invisible infrared wavelengths, so just 'darkening' things will not be enough, which makes smoked glass, polarizing filters or just dark plastic a complete no-go. Even if you feel no discomfort, these kind of things will _NOT_ protect your eyes. Take no risks there.

For your convenience, some link on how to observe an eclipse (and when you can actually take those glasses off and just look right at the real thing, naked eye and all.)
https://www.nasa.gov/content/eye-sa.....-solar-eclipse

And since there is plenty of time: For some face-to-face advise and maybe even shopping tips (or suitable equipment straight away), you can get in touch with a local planetarium or look around for any amateur astronomy clubs or such in your area, they wiill be very happy to help.

Of course, the safest method is to observe indirectly. Which is not quite as spectacular, though.

I have not seen a total solar eclipse in more than twenty years! But I have been trying to make my own sun viewer!
No luck with dark colored lens though, and I know better then to use something cheep!