You always wanted to be a space ranger, this is one step closer!
Available at: Strapya World http://www.strapya-world.com/products/40380.html ($70)
Via: NotCot http://www.notcot.com/
Available at: Amazon http://www.amazon.com/Hamster-Japanese-Erasers-8-Pc/dp/B001EMYOEQ ($6 for 8)
If you can't get out on your lunch break to commune with the succulents in the conservatory, get one that comes to you!
Available at: Suck UK http://www.suck.uk.com/product.php?rangeID=154&rangeNew=1 ($16)