Yep, I have a few. I think every accumulator or collector has a shoebox of junkers (mine are in a velveeta chees box). "I found this under my truck seat. I saved it for you, since you collect knives." Keeping it company are a few junkers I found, and knives I used as a kid.
Interestingly, one of my junkers recently received an upgrade from the shoebox to the main 'accumulation'. A very-used Remington RH-32 with a very-worn original sheath, someone bought at a rummage sale and gave me. They probably paid 50-cents, knowing them. At the time, I tossed it in the shoebox and forgot about it.
If a free junker is NIB, what the heck, it can join the main accumulation too.
By "Cheap" I hope you don't mean "inexpensive." There are tons of sub-$20 knives that would be excellent daily users, and are perfect for a beginner/young person to collect. Most of the knives I've bought recently are OldTimers and other Schrade closeouts, priced $10-$20. Most Opinels are priced from $8 - $15, and are my first choice for backpacking/hiking. The Mora knife gets excellent comments by owners at these forums.
Best Wishes,
-Bob