Amazon.com has 3' Coleman Generator Power Cord Adapter for $12.53.
Shipping is free with Prime or on qualifying orders of $35 or more.
This was mentioned about a month ago but making a new thread for it.
If you have a 240volt outler on your generator (special round plug) this can turn that into 2 120 volt / 20amp outlets you can more readily use.
Converts non-standard power outlets into usable 125v power
10/3 splitter y adapter cable with L5-30p to (2) lighted 5-20r outlet connections