You know those cool commemorative coins that the US Mint keeps issuing? Turns out that they're a handy way for Congress to get around the ban on porky earmarks for their home district. As reported last April in The Foundry:
Here’s how it works: In June of last year, Rep. Peter Roksam (R-IL) introduced legislation authorizing a commemorative coin honoring the Lions Club, a service organization based in Oak Brook, IL – part of Roksam’s district.
The legislation dictates that proceeds from the coin sales be used to pay for the cost of producing the coins, but adds: “all surcharges received by the Secretary from the sale of coins issued under this Act shall be promptly paid by the Secretary to the Lions Clubs International Foundation for the purposes.”
In other words, assuming the costs of production are covered, the legislation will steer federal funds to an organization in Roksam’s home district. No earmarks required.
There's a long list of other commemorative coins, mostly issued at Republican instigation (the coins all seem to emanate from the House), but sometimes with a Democratic push in the Senate.