Ready-to-play e-guitar setup

[glowrak guy]

1/4" TR to RCA mono right-angle adaptor
L/R RCA to 1/4 stereo female breakout cable...around 12" total length
NUX Mighty Plug MP2 headphone guitar amp device
Dedicated earbuds
Some tape to secure the extra RCA lead, and position the MP2 on the guitar where it's easy to reach the (few) controls

Great tone, and about as instant and portable as an electric guitar will ever get.
Around $120 new, less if you have a parts bin, and are willing to make custom cables from spares etc