You can snug up a zip tie or two with the buckle on the front of the seat tube to act as a pump peg. The Blackburn frame pump has a small hole on the handle end that may fit into the buckle. If not, then position the zip tie below the end of the handle.
Depending on your frame size, you may not need a zip tie at the head tube.
You might also try inserting your pump vertically along the seat tube. If you have the right size, it may hold there without any zip ties. That's how I do it on my old Raleigh.