1. Stalk thrift stores near colleges for textbooks you can resell online.
2. AbeBooks.com is the best place to look up the value of a book.
3. Some sports video games are actually very rare.
4. In fact, if you see any vintage-seeming game from a bygone game system, by all means, look it up.
5. Easily make a small profit on vintage Pyrex.
And get the complete set if you can.
6. Don't underestimate the endless sea of gross old mugs.
7. Jade-ite is a highly desired color of vintage glassware.
8. Paint-by-numbers, especially in pairs or sets, can go for $50+ on Etsy and eBay.
9. Depending on year and condition, vintage boardgames can be a hot sell on eBay.
10. When perusing the art, pay special attention to the frames.
11. If you see anything silver that looks tarnished, it could be sterling silver.
12. Dinnerware with an iridescent patina is called carnival glass and can be highly collectible.
13. Look at the stamps underneath.
14. A North Face jacket can go for over $100 on eBay if you sell during the right season.
15. You might not make a fortune with name brand workout clothing, but you'll at least turn a profit.
16. These gooseneck desk lamps that look like they're from the '60s or '70s can be easily found at thrift stores.
17. These light-up ceramic trees are frequently found at thrift stores, and can go for upwards of $50.
18. Look for sets of glass swizzle sticks.
19. Vintage blue ball perfect mason jars fetch around $10-12 apiece.
20. In fact, if you see any patterned translucent colored glass, you may have stumbled upon depression-era glassware.
21. People collect vintage cobalt blue bottles.
22. Crystal etched with the Waterford or Fostoria mark is worth picking up for cheap at thrift stores and garage sales.
The older pieces are worth more. Take a look on eBay to see what variations are the most collectible.
23. Old chocolate molds can make you a few bucks, depending on how old.
24. They're difficult to ship, but a vintage globe can fetch $200+.
25. Vintage blankets and quilts are often overlooked at thrift stores.
You can definitely mark up any Pendleton or Hudson Bay blanket, or even a pretty vintage plaid blanket or '70s looking afghan.
26. Check the tags on your clothing — anything union-made or made in the U.S.A. denotes an older item that could be worth money.
Offshore production didn’t dominate the clothing industry until the ’80s, so an American-made item is probably pre-1980.
Get a full guide to identifying vintage labels here.