A (48,20)c/813 puffer:

`x = 3, y = 3, rule = B35n/S234y`

o$obo$3o!

EDIT:2c/18

`x = 3, y = 4, rule = B35n6i/S23`

bo$obo$obo$obo!

fuse:

`x = 10, y = 33, rule = B34w8/S23`

5b3o$5bobo$5bo4$b2o$o2bo$b2o$7b2o$6bo2bo$7b2o$b2o$o2bo$b2o$7b2o$6bo2bo

$7b2o$b2o$o2bo$b2o$7b2o$6bo2bo$7b2o$b2o$o2bo$b2o$7b2o$6bo2bo$7b2o$b2o$

o2bo$b2o!

An amusing wickstretcher/puffer:

`x = 12, y = 12, rule = B3-ej4w8/S234i`

7b3o$7bo2bo$7bo3bo$8b3o4$3o$o2bo$o2bo$bobo$2bo!

This wave burns quadratically:

`x = 908, y = 4, rule = B3-ej4w8/S234i`

b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b

3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o

4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b

3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o

4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b

3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o

4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o4b

3o4b3o4b3o4b3o4b3o4b3o4b3o4b3o$o2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2b

o4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo

2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo

2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo

2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo

4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo

2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo

2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo

2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo

4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo

2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo

2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo2bo2bo4bo2bo$3bo4bo8bo4bo8bo4bo8bo

4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo

8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo

4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo

8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo

4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo8bo4bo

8bo4bo8bo4bo8bo4bo8bo4bo$2bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo

6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo

6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo

6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo

6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo

6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo6bo!

EDIT2: This dirty replicator produces a large still life:

`x = 3, y = 3, rule = B34w8/S234i`

bo$3o$bo!

This rule is explosive due to the t-based dirty replicator- but well,

`x = 3, y = 3, rule = B34w6c7e/S234i`

bo$3o$bo!

This other rule has a grander t-explosion:

`x = 3, y = 3, rule = B34w6c/S234i`

bo$3o$bo!

2c/50 diagonal:

`x = 12, y = 4, rule = B34w/S2-n34i`

8bo$bo5bo2bo$2o5bo2bo$bo6bo2bo!

double rake:

`x = 27, y = 31, rule = B34w6c/S2-n34i`

6bo3bo5bo3bo$5b3ob3o3b3ob3o$4b2obobobo3bobobob2o$4bo2bo11bo2bo$4bobo

13bobo$4b3o13b3o2$9bo7bo4$5b2o13b2o$5b2o13b2o4$6bo13bo$5bobo11bobo6$2b

obo17bobo$2b2ob2o13b2ob2o$2b2obo15bob2o$4b3o13b3o2$obo21bobo$2o23b2o$b

o23bo!

an amusing ship predecessor:

`x = 18, y = 2, rule = B34w6c/S2-n34i`

3ob3o4b3ob3o$obobobo4bobobobo!

I tried to make a rake, but...

`x = 17, y = 9, rule = B34w6c/S2-n34i`

2b3ob3o$bo2bobo2bo$bo2bobo2bo4b3o$2o2bobo2b2o2bo2bo$2ob2ob2ob2o5bo$b3o

3b3o2bo3bo$2bo5bo3bo3bo$16bo$13bobo!

actual rake:

`x = 25, y = 15, rule = B34w6c/S2-n34i`

10b3ob3o$9bo2bobo2bo$2b3o4bo2bobo2bo4b3o$bo2bo3b2o2bobo2b2o2bo2bo$4bo

3b2ob2ob2ob2o5bo$o3bo4b3o3b3o2bo3bo$o3bo5bo5bo3bo3bo$4bo19bo$bobo17bob

o4$15bo$13b2o$14b2o!

I have the best signature ever.