Cool things that regular members might not know about?

[Getlucky12341]

If you know of cool level gimmicks like having buried hammer bro or placing blue bullet bill launchers on clown cars, post em here. I want to know some cool things that can be done in levels.

[zioy]

Attach to layer works wonders

[silent_]

Diagonal lava chases are really unique and intense. Or just in general diagonal moving layers.

[FanofSMBX]

Mother Brain on a firebar

[HeroLinik]

Here's an interesting one that not many people know about:

If you pick up a buried vine head and toss it, it'll keep going, unaffected by gravity and creating climbable vines with it, until it hits a wall. You can use it to get between distant locations without using Yoshi, a Super Leaf, Propeller Block or Gold Link.

[zioy]

Here's an interesting one that not many people know about:

If you pick up a buried vine head and toss it, it'll keep going, unaffected by gravity and creating climbable vines with it, until it hits a wall. You can use it to get between distant locations without using Yoshi, a Super Leaf, Propeller Block or Gold Link.

You forgot the egg version of this.

[Tango]

You can use a Multicolored Upside Koopa Shell like a skate.

And you can have more options of npc making Lakitu throw Lakitus.

[crepperator]

You can do kaizo levels with only harmful ojects. *YEAHHHHHHHHHHHHH*

[Superiorstar]

If you put a SMW latiku on a podoboo it comes from below the screen and moves.
also, if you put a mother brain on attach layers on a generator for fish it looks really weird.

[Black Mamba]

If you set lava to invisible, it becomes intangible.

[HeroLinik]

OK, here's an interesting one.

When you select a block that is meant to contain an item, the background of the box that shows what item will come out of the block (where it says "Empty" when another block is selected) isn't a hardcoded orange BG. It's actually part of the SMB3 desert BG (I can't remember what the number is for this one), so if you replace the desert BG, the background of the item box will change with it. Believe me, I spotted this by chance when making a pyramid level.

[RudeGuy]

The NPC-290.

[Waddle]

There's an unused block in SMBX, block-183. Its a flat-surface SMB3 sand block, and its really useful in desert levels.

[h2643]

It's not unused, it can be placed in a level with debugger. It just can't be placed normally in SMBX, but can be with PGE Editor.
Also, my discovery of dummy NPCs.