Dutch Bike

Does anyone do something like this as frame+fork only?

Yes:

1. Come to Amsterdam (or another Dutch city with canals) and bring your fishing tackle with you
   
2. Visit any waste disposal site or check the streets when garbage is collected
   
3. Flea market
   
4. Check Marktplaats auction site
   
   

1&2 are for free
3&4 will cost some cash, perhaps transport only