Corporate tax cuts
Deregulation
Republicans are a little better when it comes to spending. And the few politicians who won't brook pork are Republicans.
Also I believe at the state and local levels, the Republicans are often the better administrators. You see this reflected in some blue states like Massachusetts and Maryland and perhaps now Virginia that have elected Republican governors. Charlie Baker in Massachusetts and Larry Hogan in Maryland are very popular.
Barleycorn had some good ones, like energy independence, Operation Warp Speed, and my personal favorite, Republicans are more inclined to let the states do their own thing. Governance and public services and taxation closest to the people, meaning at the local and state level, works best.