Reasonable 2.1 speaker setup for laptop

[Mojito_619]

Hi guys, my dads birthday is coming up and I thought about getting him some speakers for his laptop whilst he's at work in the home office. I'm aiming to spend around 30-40pounds on them.

The trouble is, I have no clue what to get him. But he would like a woofer that wouldn't go all muddy after turning up the volume a bit like some of those Logitechs I've heard.

Do you guys have any suggestions?
Also, if you know some 2.0 setups with decent enough bass and still in price range I'll still be interested.

Thanks
Mojito