After work, I can recommend two ways to relax-
1. Gardening: digging, planting, pruning. Even when you’re tired, go gardening. You’ll find that you spend an hour when you planned 30 minutes, and your energy flows again.
2. Improvising- For the last while I’ve just had a Casio CZ-1 and nothing else. Most evenings I’d spend an hour or so playing around with layering and tuning, and coming up with music that sounds very different to what I’ve written before. It’s liberating not to have any expectations on the outcome. It’s a challenge to capture this stuff though! Just pressing record can set up an expectation.