i have a wheelchair from newskill but i need more elevation.

there is 3 sizes:
20mm height .
36mm height .
50mm height .

and same sizes with holder piece.

you can print the bottle holder here: https://www.thingiverse.com/thing:3944166

Headphone holder here: https://www.thingiverse.com/thing:6606261

cup holder here: https://www.thingiverse.com/thing:6606724