Wait, what is this mysterious glass jar? What does it contain? The adventurers pondered the consequences of touching the wizards collection of rare tinctures and potions.
The price is often what you would expect to pay at Wal-Mart, Target or Halloween shops but unlike the mass produced items de jour that everyone else is purchasing yours will seem unique. On top of that bonus is the fact that you may get an actual collectible out of the deal and of course helping to keep another person's business/hobby afloat (or maybe just help them clean out their storage space.)
In my games the use of images helps the players to visualize certain things better, as the saying goes a picture is worth a thousand words (at least to those without vision impairments). Scouring the web, or drawing something always works. Taking pictures while out and about works as well.
The real life items can be used as decor in the game room, or even used as a reward system for the players. If your group likes physical trinkets then handing them an actual item that their characters use will increase the fun and give them a visual memory trigger!
