At shows I like to get rare items - also things they cant sell on
ebay henning nickels, wwii items, cuba
V nickels etc... bu wheat errors, waffle, clipped, double strikes, etc. usually just cherry pick the cheap bins and buy rolls.
you could make error type sets blank plancet, offset, clipped, rpm,
DDO, etc
I also end up buying bu rolls of most likely pre checked early wheats... I also like grab Canadian cent bu rolls