I'm not the organiser of this but I saw it on Facebook and thought I would mention here as I hadn't seen anyone else post.
Basically this is an event where you can set up a little stall in your front garden as part of the trail. You can sell bric a brac and household items, clothes, cakes and arts and crafts. The event is well publicised on Facebook and flyers in local streets, even on a horrible rainy windy day last year we had a good turnout so with the better weather it should be a really good event. More info here:
http://www.jumbletrail.com/event/Finsbury+Park+Spring+2016
We did the past two and had a lot of fun chatting to neighbours and jumble trailers.
We will be doing it again on Pemberton Rd*** moved to Hornsey Vale Community Centre****selling assorted plants and the little bird and bughouses that my partner makes - see his Twitter feed @briggsbughouses
As I said I'm not the organiser so if you want to join or have any questions see the jumble trail link above, or the Facebook page
https://www.facebook.com/events/950235181728449/
It would be really good if we could get more stalls on the ladder, especially on Wightman Rd with the road closures!
***stall moved to Hornsey Vale but can still collect from Pemberton Rd