ConwayLife.com

tl puffer:
x = 24, y = 51, rule = B3/S23
3b3o11b3o$3bo2bo10bo2bo$3bo6b3o4bo$3bo5bo2bo4bo$4bobo6bo4bobo$8bo$9bo
4bo$14bo$12bo$11b3o$11b3o5b3o$2b3o7b2o5bo2bo$bo2bo3b6o5bo$4bo3b6o5bo3b
o$o3bo7b2obo3bo3bo$4bo7bo3bo2bo$bobo8bo7bobo$11bo$10bobob2o$11b3o$3bo
8bo$2b3o$2bob2o$3b3o$3b3o3bo$3b3o4b2o ...

Maybe I didn't remember correctly...

There's this " partial " (please run in toroidal mode):
...


Dunno... Maybe this ? :

x = 35, y = 15, rule = LifeHistory:T35,16
35A$4BA5BA6BA7BA5BA3B$3A4B3A4B3A4B3A4B3A4B$2BA6BA6BA6BA6BA4B$3A4B3A4B
3A4B3A4B3A4B$3BA7BA6BA5BA7BA2B$35A2$35A$2BA7BA5BA7BA6BA3B ...

Is this possible ?



#C [[ THUMBNAIL NOSOURCE ]]
x = 50, y = 11, rule = LifeHistory
8.2A38.2A$A2.A2.A2.A27.E2.A2.A2.A2.A$9A7.D11.D8.3E9A$17.D11.D$9A9.13D
6.3E9A$A8.A7.D11.D7.E2.D8.A$.9A6.D11.D9.3E9A2$.9A28.3E9A$A2.A2.A2.A
27.E2.A2.A2.A2.A$2A35.2E.2D!



I mean, is it possible to extend an end of ...

This is almost certainly know because it's simple.
...

... the p20 c/2 stamp collection . That particular blinker puffer doesn't show up there, but there are two other puffers of about the same size that produce the same line of blinkers.
...


This slight variation is a traffic light ...

Another 16x16 and a 18x18 close relative :

x = 58, y = 27, rule = LifeHistory
3D.D.D5.D.D25.D.D.3D5.D.D$2.D.D.D.D.D.D.D25.D.D3.D.D.D.D.D$3D.3D2.D2.
3D25.3D.3D2.D2.3D$2.D3.D.D.D3.D27.D.D3.D.D3.D$3D3.D7.D27.D.3D7.D5$2A.
2A.A2.E.2E.2E24.2A.2A.A.2E.A.2A.2A$2A.A.3A3E.E.2E24.2A.A.2A.2E.2A.A.
2A$3.A8.E30 ...

queen bee stablized by ...


And of course this - stabilized by QBs - may be known:
x = 24, y = 24, rule = LifeHistory
9.2BABAB$7.4BA3BAB$4.BA9BA4B$3.B2A5BA4BA4B$3.3A9BA5B$2.BA7BA3BA6B$2.
2A2B3.2BABAB3.4B$.B3AB12.5B$.5B12.B3AB$7B10.B2AB2AB$7B10.B2AB2AB$2A3B
2A10.B5AB$B5AB10.2A3B2A$B2AB2AB10.7B ...

A pulsar hitting some blocks results in two pulsars.
x = 11, y = 23, rule = B3/S23
6b2o$6b2o5$9b2o$bo7b2o$obo$obo$2o2$2o$obo$obo$bo7b2o$9b2o5$6b2o$6b2o!


And so on...

x = 121, y = 149, rule = LifeHistory
3.2E111.2E$3.2E111.2E5$2E117.2E$2E117.2E4$10.D99.D3$13.2E7.2E73.2E7.
2E$2E11.2E7.2E73 ...

Just register to add my .05

Along these same lines, the point here is that all the syntheses effort to date have been done using just gliders. That's logical, gliders are ubiquituous, its properties are well known, and there's a lot of mechanisms involving gliders: conduits, reflectors ...