This compressor could be useful for both big and small projects. Freedom from cords and not having to charge any batteries are some of the advantages of battery and mains power.
From Amazon
Bosch Home and Garden Electric Air Pump / Air Compressor UniversalPump 18V (Without Battery, 18 Volt System, for Car, Motorcycle and Bicycle Tyres, 150 PSI, 10.3 Bar, in Carton Packaging)
Wickes
Bosch UniversalPump 18V Cordless Inflator Pump - Bare
Conrad Electronic
Bosch Home and Garden Pneumatic pump UniversalPump 18V 10.3 bar