Using 2020 aluminium extrusions here's a simple but strong little table to sit your Ender 5 Plus on.

It's not the cheapest thing to build but it's stable and adjustable. I used my Lack table top as I was not comfortable sliding that table around as the legs are not well fixed.

The size of the table in the photos is 540x540x640mm perfect size for my Ender 5 Plus.

BOM Extrusions 2020 Profile V-Slot Aluminium Extrusion - Rails 500 8x 2020 Profile V-Slot Aluminium Extrusion - Legs 550 4x (increase this length to suit your needs) Thread 1 end of each leg extrusions to a 20mm depth with M6 thread.

Brackets 2020 Profile 40mm Corner Bracket 20mm x 40mm - Inside top corners 4x Flat Aluminium Corner Bracket 60mm x 60mm - Outside top corners 8x 2020 Profile 28mm Corner Bracket 20mm x 28mm - Inside corner bottom rails 4x 2020 Profile 20mm Corner Bracket 20mm x 20mm - Underside of bottom rails to legs 12x 4 spare to mount your selected top to be used.

Foot screw in M6 x 25mm threaded  Feet 4x

Fixings Button Skt Screw Stainless Steel 304 M5 x 10mm 100x Should be spares 2020 T-Nut (Hammer/Swivel/Drop in) M5 Thread 100x Should be spares M5 Washers - Used on corner bracket bolts 20x Nut Stainless Steel 304 M6 - Lock nut for feet 4x