I wanna share my thoughts on a few faucets I tried recently.
The balance is credited instantly and it's only limited to 0.2 mBTC. If you think this is enough for your testnet needs, perhaps this is the easiest and quickest option.
The process might take a few days because after claiming, tBTC isn't immediately sent to the wallet. I'll edit this post if there's any balance coming in from the website.
Coins are sent manually and sometimes it takes me a few days to do it.
When I paste the testnet address I created using Electrum, the indicator turns red, and the 'Get Bitcoins' button can't be clicked. Something seems off. Looks like I won't be getting any tBTC from this website.
Be careful when entering the captcha because this website restricts tBTC claims to only once per hour per IP. If you enter the captcha incorrectly, try again in the next hour. Unfortunately, because I entered the captcha incorrectly, I won't be able to make a claim for the next hour. I'll update later if I receive any balance from here.