Id say car boot sales too but there arent that many this time of year. I see PS1 and PS2 games by the truck load at boot sales.
You could of course also buy my bargain PSOne bundle:
https://www.amibay.com/showthread.php?t=21123
[ducks to avoid objects being thrown at him by morcar for the cheap plug]
if i had the money I would mate cuz most of those games both the kids and I would play them. I already have a PSONE with 2 Dual Shock Pads and a Steering wheel (which I am no good at)
I did have 20 quid on me but i spent that on a bundle of PSONE games from fleebay along with a few other bits and bobs so for a little while i am skint.
I do have some stuff though that I will be selling on here in the coming the weeks though.