The only problem is to buy the ignitors, its like $6 for a pack of 6.
As a kid, we had that problem too.
One of my buddys saved those old #'1157' tail light bulbs when anybody changed one due to one of the filaments burning out.
We'd carefully break the bulb, salvage the good filiment wire, twist it onto our (old extension cord) detonator wire....
With the help of a reachable car's battery,,,,,, we had lift off!!!