Sometimes I wish I had started my plants in evenly sized black square pots to save space and my sanity. I do love to constantly rearrange my little collection to make sure every pot gets a decent amount of sun.
In this pic:
(Front) Pseudolithos cubiformis, 9 months.
(Middle) Stapelia grandiflora, 3 months.
(Back, in tin buckets) My still tiny Pleiospilos and Lithops, 1 year+5 months.