You can use affiliate links after the fact. You don’t have to decide upon building a WordPress site that you’re going to optimize it with Amazon affiliate links. You can decide down the road that you want to give affiliate marketing a try and, consequently, revisit old content, embed affiliate links within it, and start generating revenue that way--especially if your old content is finally starting to take off.
People are always looking to have their cars washed and detailed. You could be a mobile car washer and detailer without having a permanent location. Reach out to people you know or make some flyers and put it in your neighbors' mailboxes. If you want to get serious about it, prop up a one-page website or give out business cards. You can make money quickly doing this.
Français: gagner de l’argent (pour les enfants et les ados), Español: ganar dinero siendo niño, Português: Ganhar Dinheiro (para Crianças), Italiano: Guadagnare dei Soldi (per Ragazzini), Deutsch: Als Kind Geld verdienen, Русский: детям заработать деньги, Nederlands: Als kind geld verdienen, 中文: 赚取零花钱（针对小朋友）, Čeština: Jak si vydělat peníze (pro děti), العربية: كسب الأطفال للأموال, ไทย: สร้างรายได้สำหรับเด็ก, Tiếng Việt: Kiếm tiền (dành cho trẻ em), Bahasa Indonesia: Menghasilkan Uang (untuk Remaja)
You can open a store without the burden of managing inventory. One of the ways in which you can use Amazon affiliate links is to populate your online store with third-party products. This spares you from having to produce, store, or even manage inventory. That’s all handled by the manufacturers. You only need to worry about maintaining your online store.
If you're running on fumes, financially speaking, but you have some money coming your way soon, consider pawning something of value to borrow fast cash. Of course, to get those items back you'll need to pay back the loan with interest. If you don't pay it back in time, that you'll lose the item. If it's really something that has a lot of intrinsic value to you, don't do it. But if it's something that doesn't, you can certainly consider it depending on your situation.
If you have a propensity for writing and you can slay with your prose, consider writing an ebook. While the market has certainly become saturated as of late, books that help teach people about a technical topic still sell extremely well. This is a great source of passive income but does require a large amount of effort at the outset before any money is generated.