I crossed the country twice with a Park floor pump bungied on top of my BOB trailer (this was before the invention of the Topeak road morph). I intended to carry it for just the first week and then send it home, but it was a such hit amongst the ACA group members I was leading I kept it for the duration of the trip. It was used by all to top over tires in the morning and by me helping others with flats on the road. Yes, a source of snickers from the passing lightweight crowd but I was a fit young pup in my 50's and weight was just not an issue or concern back then. Now in my 60's I've begun to lighten up. Maybe in my 70's I'll be touring on my Litespeed stuffing everything into a Viscacha and frame bags carrying CO2 cartridges!