I'll list the best, since I don't dwell on the worst shops. I just don't do them again.
6 hours notice for a route of jobs in Puerto Rico. No reports. I texted the raw data to the scheduler who filled them out for me.
Casino shop where I won over the max I could keep $1199 and then lost enough (finally on slots to get down to under $1199).
Cruise shops. Just me, one other shopper and the MSC staff did these. Only evaluated the casino. Paid for 2 people (kids went free). Airfare paid. Super easy reports. I chose the cruises myself.
Point of sale evaluations. I got a spreadsheet of locations to choose from. I just went in and bought stuff. I kept the stuff. Only evaluated the sale.
Major league sporting events. All expenses paid (mileage, airfare, hotels, rental cars). VIP access and suites. Too much food and drink to possibly consume by myself.
Disneyland. Every two weeks for over a decade.
Mailing shops (not the current company or client). Fed Ex, DHL and UPS. Full reimbursement.
Those are the biggies. I am still on my free $5 worth of gas at every station within 50 miles of home, work and every travel location I'll be at every quarter like white on rice. I don't even need a bonus.